Tampilkan postingan dengan label Climbing. Tampilkan semua postingan
Tampilkan postingan dengan label Climbing. Tampilkan semua postingan

Senin, 10 Maret 2008

Routes and grading

Grips come in different colours, those of the same colour often being used to denote a route, allowing routes of different difficulty levels to be overlaid on one another. Coloured tape placed under climbing holds is another way that is often used to mark different climbing routes. In attempting a given route, a climber is only allowed to use grips of the designated colour as handholds but is usually allowed to use both handholds and footholds of the designated colour and surface structures and textures of the "rockface" as footholds.


The grade (difficulty) of the route is usually a consensus decision between the builder of the route and the first few people who climb the route.

Many indoor climbing walls have people who are assigned to set these different climbing routes. These people are called route setters.

@ source : wikipedia
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Types of Walls for climbing

The simplest type of wall is of plywood construction, known colloquially in the climbing community as a 'woody', with a combination of either bolt-on holds or screw on holds. Bolt-on holds are fixed to a wall with iron bolts which are inserted through the hold, which will have specific bolt points, and then fixed into pre-allocated screw-threaded holes in the wall. Screw-on holds are, by contrast, usually much smaller, owing to the nature of their fixing. These holds are connected to the wall by screws which may be fastened anywhere on the wall's surface.


Other types of walls include slabs of granite, concrete sprayed on to a wire mesh, pre-made fiberglass panels, manufactured steel and aluminum panels, and textured fiberglass walls.

@ source=wikipedia.org
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History of wall climbing

The concept of the artificial climbing wall began in the UK. The first wall was created in 1964 at Leeds University by Don Robinson, a lecturer in Physical Education and founder of DR Climbing Walls, by inserting pieces of rock into a corridor wall. The first commercial wall was built in Sheffield, traditionally England's centre for climbing due to its proximity to the Peak District.
An outdoor climbing wall at the University of Bath, England
An outdoor climbing wall at the University of Bath, England


Gym climbing is becoming an increasingly popular urban sport and provides many people with the opportunity to try some aspects of the sport of rock climbing. Bouldering gyms focus on bouldering rather than roped climbing.

@source=wikipedia
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wall climbing

A climbing wall is an artificially constructed wall with grips for hands and feet, used for climbing. Some are brick or wooden constructions, but on most modern walls, the material most often used is a thick multiplex board with holes drilled into it. Recently, manufactured steel and aluminum have also been used. The wall may have places to attach belay ropes, but may also be used to practice lead climbing or bouldering.


Each hole contains a specially formed t-nut to allow modular hand holds to be screwed on to the wall. With manufactured steel or aluminum walls, an engineered industrial fastener is used to secure hand holds. The face of the multiplex board climbing surface is covered with textured products including concrete and paint and/or polyurethane loaded with sand. In addition to the textured surface and hand holds, the wall may contain surface structures such as indentions (incuts) and protrusions (bulges), or take the form of an overhang, underhang or crack.

Some grips are formed to mimic the conditions of outdoor rock, including some that are oversized and can have other grips bolted onto them.
@source :wikipedia
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Types of rock climbing

Rock climbing may be divided into two broad categories: free climbing and aid climbing.

* Free climbing requires the climber use only his/her bodily strength for upward progress. Commonly confused with "free-soloing" which means to climb without a rope. The essence of free climbing is that, although gear may be used to protect a climber in the event of a fall, the actual "climbing" is being done without the help of any artificial device.

* Aid climbing involves using artificial devices placed in the rock to support all or part of the climber's body weight, and is normally practiced on rock formations that lack the necessary natural features suitable for free climbing.

Other kinds of climbing:

* Lead climbing is a method of climbing in which the climber (here called the "leader") climbs a route from the ground up. To protect him/herself, the climber trails a rope which is managed by a belayer who remains on the ground or at an established anchor. As the leader climbs, he/she can either clip the trailed rope through pieces of traditional gear (cams, stoppers), placed in cracks, or clip the rope through gear already in place (bolts, pitons). If a climber falls while leading, he/she cannot comfortably sit back on the rope and be held by the belayer as in toproping (where the rope is anchored above the climber); rather, the leader will fall twice the distance between his/her position and the most recent piece of protection (a cam, stopper, bolt, etc.) that he/she clipped the rope through (assuming this piece of protection holds).
* Traditional Climbing, or "Trad" Climbing. In Trad Climbing, the leader uses mostly removable gear (and the occasional bolt placed on lead) to protect against falls. As in all forms of lead climbing, the climbing team (a leader and follower, or multiple followers) begins at the bottom of a climb and ascends to the top, the leader placing protective devices in the rock as he/she climbs. Once the leader is finished climbing, he/she establishes a belay. The follower then "follows" the route and removes all of the gear placed by the leader. It is important that the leader be proficient at placing Trad (or clean or natural) gear (cams, stoppers, hexes, tri-cams, etc.) because his/her safety depends upon the soundness of each individual gear placement. Placing trad gear on lead can be time-consuming and thus tiring, sometimes making routes feel harder than their rating. Trad climbing is generally practiced according to ethical principles, that dictate primarily natural gear placements be made. However, when "traditional" was first coined in U.S. climbing literature,[1] traditionalists of the day permitted themselves hand drilled bolts sometimes from delicate stances on lead when cams, stoppers, etc. were not possible to place. Some of the resulting traditional routes have long run outs between bolts, requiring a "bold" mentality. More important to the original traditionalists than bolting or not was the overall approach to climbing: no resting on the rope after falls, instead lowering to a stance or pitch beginning or even the ground for restart; no placing of protection from a top rope or rehearsing difficult moves over and over; and no fixing of ropes to high points (sieging) to return with aid for repeated tries. It is, with perhaps the exception of climbing with no rope and prior knowledge of a route Free-soloing, the purest form of climbing. Since the term traditional first emerged in U.S. climbing literature, its use has changed. Some, for example, now will call a climbing style "trad" only if no bolts are encountered, and may relax the old restraint of lowering off tension for restarts after a fall.
* Sport climbing is a type of lead climbing which involves the use of pre-placed permanent bolts for protection. This frees the leader from the need to carry and place traditional gear. The leader merely clips one side of a quickdraw (two carabiners connected by a loop of webbing) into a bolt and the other into the rope. A typical sport route will require the leader to carry between 6 and 12 quickdraws or "draws," one for each bolt in the string of bolts that protect the route. Sport Climbing, in essence, is focused more on the gymnastic aspects of climbing than the aesthetics or adventure. Sport routes are bolted with safety in mind and also because they generally (though not always) ascend faces that are not protectable by any other practical mean. Bolts, however, are not foolproof. The same stringence concerning safety found in Trad. climbing should apply to Sport climbing as well. In the case of a fall, sport climbers often rest on the rope and begin from where they are hanging, called "hang-dogging." Hard sport climbs often require that the climber literally rehearse every single move several times before he/she can complete a clean ascent (without falls).
* Top Roping involves suspending a rope from an anchor located at the top of a short climb. The climber ties into one end of the rope and is belayed by his belayer who manages the other end of the rope. The belayer can belay either from the top or base of the route. This is distinct from Lead climbing where the climber is not safeguarded by a rope attached to an anchor situated at the top of the route.
* Bouldering may be described as climbing short, severe routes on boulders or small outcrops. While safety ropes from above are occasionally used, most boulderers feel that the most ethical form of protection is a bouldering mat or pad similar to those used by gymnasts. In addition, other climbers standing on the ground may "spot" the boulderer, to help safely guide his or her fall.
* Indoor climbing is a form of climbing that can involve bouldering, top roping, and leading in an indoor environment on wood or plastic holds. For most it will be the easiest way to begin the sport.
* Free solo climbing: Usually describes free climbing without a rope or other protective gear. Free solo climbing is distinguished from solo climbing where a climber progressing alone uses a rope and protection devices including a self belay system.

@ source:wikipedia
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Rock climbing basics


Climbers usually work in pairs. One climber climbs with the other belaying. In lead climbing, the belayer feeds rope to the lead climber through a belay device. The leader climbs, occasionally placing protection or clipping preplaced bolted hangers, until the top is reached. The belayer is ready to "lock off" the rope in case the leader falls.


Both climber and belayer attach the rope to their climbing harness. The rope is tied into the climber's harness with a figure-of-eight loop or double bowline knot. The leader either places his own protection (Traditional climbing) or clips into permanent protection already attached to the rock (Sport climbing). In traditional climbing, the protection is removable. Usually nuts or Spring-loaded camming device (often referred to as "cams" or "friends") are set in cracks in the rock (although pitons are sometimes used). In sport climbing the protection is metal loops called bolts. Bolts are secured to the rock with either expanding masonry bolts taken from the construction industry, or by placing glue-in bolt systems. In ice climbing the protection is made-up of Ice Screws or similar devices hammered or screwed into the ice by the leader, and removed by the second climber.

The lead climber typically connects the rope to the protection with carabiners or quickdraws. If the lead climber falls, he will fall twice the length of the rope from the last protection point, plus rope stretch (typically 5% to 8% of the rope out), plus slack. If any of the gear breaks or pulls out of the rock or if the belayer fails to lock off the belay device immediately, the fall will be significantly longer. Thus if a climber is 2 meters above the last protection he will fall 2 meters to the protection, 2 meters below the protection, plus slack and rope stretch, for a total fall of over 4 meters.

If the leader falls, the belayer must arrest the rope to stop the fall. To achieve this the rope is run through a belay device attached to the belayer's harness. The belay device runs the rope through a series of sharp curves that, when operated properly, greatly increases friction and stops the rope from running. Some of the more popular types of belay devices are the ATC Belay Device, the Figure 8 and various auto-locking belay devices such as the Petzl Gri-Gri

If the route being climbed is a multi-pitch route the leader sets up a secure anchor system at the top of the pitch, also called a belay, from where he can belay as his partner climbs. As the second climber climbs, he/she removes the gear from the rock in case of traditional climbing or removes the quickdraws from the bolts in the case of sport climbing. Both climbers are now at the top of the pitch with all their equipment. Note that the second climber is protected from above while climbing, but the lead climber is not, so being the lead climber is more challenging and dangerous. After completing the climb, and with both climbers at the top of the pitch, both climbers must rappel or descend the climb in order to return to their starting point. All climbs do not necessarily require the lead climber to belay the second climber from the top. The belayer could lower the lead climber down after he/she has completed a single pitch route.

Occasionally, climbers may decide to "move together", a risky but speedy technique also called simul-climbing, in which both leader and second move at the same time without stopping to belay. The leader - approximately a rope length above the second - usually places multiple pieces of protection as he climbs so that the weight of the second climber might arrest a possible leader's fall. Should the second climber to fall, however, the leader may be pulled from his holds, with potentially dangerous results.

@ source = wikipedia.org
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Some historical from 400BC to 2001

* 400 BC: Chinese watercolors that depict men climbing rocks.

* 1300's : The Anasazis in the southwest United States drilled holes for posts and carved steps up the steep rock cliffs in Chaco Canyon. There are cliff dwellings scattered throughout the southwest. Given the difficult approaches to some of these cliff dwellings it seems reasonable to assume that the natives had the skills necessary to ascend what would now be considered technical climbing terrain.


* 1492 : Antoine de Ville ascends Mont Inaccessible, Mont Aiguille, a 300 meter rock tower south of Grenoble, France. Under orders from his king, he used the techniques developed for sieging castles to attain an otherwise unreachable summit. The ascent is described by François Rabelais in his Quart Livre.[5]

* 1695 : Martin Martin describes the traditional practice of fowling by climbing with the use of ropes in the Hebrides of Scotland, especially on St Kilda.[6]

* 1786 : The first ascent of Mont Blanc is often referred to as the start of mountaineering’s “modern era”. It took another century before history documents the use of devices similar to today’s fixed anchors: pitons, bolts and rappel slings.

* By the 1800s, climbing was developing as a recreational pastime. Equipment in the early 1800s began with an alpenstock (a large walking stick with a metal tip), a primitive form of three- point instep crampon, and a woodcutter's axe. These were the tools of the alpine shepherd, who was shortly to move from guiding sheep to guiding men, a much more lucrative enterprise. With time the alpenstock and the axe were combined into one tool: the ice-axe. Add a large, thick (and weak) rope, to help the client climb, and guide and novice were off to the mountains.[7]

* 1869 : John Muir, famed naturalist and climber, wearing hiking boots, makes the first ascent of Cathedral Peak in Tuolumne Meadows as an on-sight, free solo. He is also known for spending a night at the top of a 100+ foot tall pine tree during a lightning storm, now known as the John Muir Tree.[8] [9]

* 1875 : Half Dome in Yosemite National Park is first climbed by George Anderson. He uses eye bolts in drilled holes as hand and toe holds. He uses a fixed rope to return to his high point each day.[10] [8] [9]

* 1880s : The Sport of Rock Climbing begins in the Lake District and Wales in Great Britain , Saxony near Dresden, and the Dolomites. W. P. Haskett Smith is frequently called the Father of Rock Climbing in the British Isles, and Oskar Schuster was an early climber at Elbsandsteingebirge.

* 1886 : W. P. Haskett Smith makes the first ascent (in free solo style) of the 70 foot Napes Needle, in the Lake District of England. The resulting publicity introduces the general British public to the new sport of rock climbing.

* 1887 : Georg Winkler, at the age of 17, makes the first ascent - solo - of Die Vajolettürme in the Dolomites, initiating the sport of rock climbing in that area.

* 1893 : Devils Tower is first summited by ranchers William Rogers and Willard Ripley through the use of wooden spike pounded into a crack and then connected with a rope. After 6 weeks they summited on the Fourth of July.[11] [8]

* 1897 : O. G. Jones leads Kern Knotts Crack (ca 5.8) on the Great Gable in England

* 1900 to 1910: German and Italian climbers make significant strides in developing special pitons, carabiners, and rope-handling techniques.

* 1906 : Oliver Perry-Smith, W. Huenig, Rudolf Fehrmann climb Teufelsturm in the Elbsandsteingebirge, 5.10 (with original shoulder stand around 5.8+).

* 1910 : Hans Fiechtl replaces the attached ring on pitons with an eye in the body of the piton which is a design used to this day.[12]

* 1910 : Otto Herzog designs the first steel carabiner, specifically made for climbing.[13]

* 1910 : Willo Welzenbach creates the standard numerical rating system for the amount of time typically needed to complete a route (Grades I to VI) [14]

* 1910 : Austrian development of rappelling.[15]

* 1910 : Oliver Perry-Smith, M. Matthaeus, H. Wagner ascend The Grosser Falknerturm, W. Route in the Elbsandstein, 5.9.

* 1910 to 1914 : Hans Dülfer suggests using equipment to ascend otherwise unclimbable rock, devises dulferitz rapelling technique.[16]

* 1914 : Paul Preuss, an advocate of Free climbing, coins the term "artificial aid" to describe the use of mechanical aids to progress up a rock. His rule number four (of six) stated: "The piton is an emergency aid and not the basis of a system of mountaineering."[17]

*

Note: The two principal uses of pitons on an ascent were as protective safeguards (not used for actual hand or footholds - climbers refrained from putting weight on them except in the event of a fall) and as direct aid (used to physically assist in ascending a steep or overhanging slope rather than merely as protection). Climbers like Paul Preuss and Geoffrey Winthrop Young argued strongly against direct aid, but others of that era, including Hans Dülfer and Tita Piaz, advocated using such devices as artificial aids in order to climb otherwise unscalable walls. After World War I most European climbers chose to employ artificial aid when necessary. However, from the beginning days of rock climbing as a sport, through the 1940s, another form of artificial assistance was at times employed by teams of two or more climbers: the shoulder stand. From our current perspective it seems odd that many of those climbers who strenuously objected to hanging on a piton found the shoulder stand to be quite acceptable. Occasionally, historical climbing photos, (e.g., [1]) illustrate this strategy, which arose from the perception that ascending a route was a team effort, with two climbers constituting one natural climbing unit. Something to keep in mind when reading of very early climbs in the 5.8 to 5.10 range.

* 1914 : Siegfried Herford and companions climb the Flake Pitch on Central Buttress of Scafell (5.9), England's hardest climb at the time

* 1919 : Sees the publication of Guido Rey’s book, "Alpinisme Acrobatique", on the "artificial" techniques utilizing the latest, easily available pitons and carabiners

* 1920s - 1930s : Robert Underhill and Miriam Underhill (Miriam E. O'Brien) - One of the early rock star climbing couples. Robert is remembered for introducing European climbing techniques to the west coast of the US through an article in the 1931 Bulletin of the Sierra Club.

* 1922 : Paul Illmer and party ascend the Illmerweg on Falkenstein (5.9/5.10), Elbsandstein

* 1925 : Solleder and Gustl Lettenbauer climb the Northwest Face of the Civetta in a day, a 3800 foot 5.9 route in the Dolomites, using only 15 pitons for protection and belays.

* 1925 : Albert Ellingwood and a party of three climb the 2000 foot Northeast Buttress of Crestone Needle (5.7, 14,197 feet).

* 1927 : Laurent Grivel designs and sells the first rock drill and expansion bolt. [18]

* 1927 : Joe Stettner and brother, Paul, apply European techniques in the USA on their ascent of the Stettner Ledges on the East Face of Long's Peak. [8] [9]

* 1927 : Fred Pigott's experiments with slinging natural chockstones and later machine nuts, for protection at Clogwyn Du'r Arddu on Snowdon, directly led to the development of the modern Stopper.[19]

* 1930 : Jack Longland climbs Javelin Blade (5.10), Hollytree Wall, Idwal

* 1931 : Emilio Comici and the Dolomites. Comici is the inventor and proponent of using multi-step aid ladders, solid belays, the use of a trail/tag line, and hanging bivouacs. Pretty much the origin of big wall climbing and techniques. He uses them to good purpose with an ascent of the 26 pitch, 4000 foot Northwest Face of the Civetta.[20]

* 1934 : Pierre Allain champions bouldering at Fontainebleau; climbs L'Angle Allain (V2)

* 1934 : Dick Leonard, teams up with Jules Eichorn and Bestor Robinson for the first ascent of the Eichorn Pinnacle of Cathedral Peak in the Sierra Nevada. He also creates the concept and practice of the dynamic belay at Indian Rock. [8]

* 1935 : Pierre Allain produces first soft-soled climbing shoe. Revised for extreme rock 1948

* 1938 : Ricardo Cassin ascends the Walker Spur of the Grandes Jorasses "...perhaps the finest in existence" - Gaston Rebuffat from "The Mont Blanc Massif - The 100 Finest Routes".

* 1938 : North Face of the Eiger ascended by Heinrich Harrer, Fritz Kasparek, Andreas Heckmair and Wiggerl Vörg.

* 1939 : David Brower and the rest of his Berkeley crew use four bolts in the process of ascending Ship Rock in New Mexico. [8] [9]

* 1940s : World War II leads to the development of inexpensive army surplus pitons, carabiners and the newly-invented nylon rope.[21]

* 1946 : Rene Ferlet climbs Marie-Rose (V3) Fontainebleau

* 1946 : John Salathe, at the age of 46, attempts to rope-solo aid the first ascent of the Lost Arrow Spire, one of the most exposed features in Yosemite Valley. (The protection bolt he places on that attempt was the first, or one of the first, in the valley.) He is also known for his forged pitons made from the axle of a Model A Ford. [8] [9]

* 1952 : Lionel Terray ascends the Patagonian peak, Fitzroy, with his partner Guido Magnone.

* 1952 : Joe Brown makes the FA of Cenotaph Corner (5.10) Dinas Cromlech, Wales

* 1952 : John Streetly makes the FA of Bloody Slab (5.9) LLanberis Pass, Wales

* 1953 : Robert Paragot climbs Le Joker (V5) Fontainebleau

* 1954 : Joe Brown and Don Whillans climb the West Face of Aiguille de Blaitiere, including the famous Fissure Brown (5.11), in the Alps.

* 1955 : Walter Bonatti Considered one of the greatest climbs of all time, his solo first ascent of a new route on the Southwest Pillar of the Dru takes six days.

* 1955 : John Gill introduces chalk & modern dynamics; first V8 (1957), V9 (1959) ; freesolos FA Thimble overhang (5.12a) (1961) [8] [22]

* 1958 : Warren Harding and team climb the 3,000 foot Nose of El Capitan using siege tactics, taking a total of 45 days over an extended period. Almost entirely aid climbing, with many bolts (125), the climb is given world-wide recognition.

* 1961 : Royal Robbins, Chuck Pratt, and Tom Frost ascend the 3,000 foot Salathe Wall on El Capitan. Continuous ascent by Robbins & Frost in 1962, [23].

* 1964 : Robbins, Pratt, Frost, and Yvon Chouinard climb the North American Wall on El Capitan, [23]

* 1967 : Pete Cleveland climbs Superpin in the Black Hills (5.11X) [8]

* 1968 : Royal Robbins solos the Muir Wall on El Capitan, [23]

* 1971 : Al Rouse climbs Positron (5.11) Gogarth, Anglesey

* 1971 : Tom Frost and Yvon Chouinard design Hexcentrics. [8]

* 1974 - 1977 : Jim Holloway establishes - in Colorado - the hardest bouldering problems in the world, at the time. These include Slapshot (V13) and Meathook (V11), [22]

* 1976 : John Bachar initiates an era of free soloing with his ascent of New Dimensions 5.11a [8]

* 1977 : Pete Cleveland climbs Phlogiston, at Devil's Lake, 5.13a/b or V9 [8]

* 1978 : Ray Jardine invents the first modern spring loaded camming device (SLCD or cam)

* 1979 : Tony Yaniro climbs Grand Illusion, Sugarloaf (CA), 5.13b/c [8]

* 1970s : Sport Climbing is developed, in France

* 1980 : Boreal introduces the first "sticky rubber" shoe, the Fire

* 1980 : Bill Price climbs Cosmic Debris, Yosemite, 5.13b[8]

* 1983 : Alan Watts introduces sport climbing to the US, with Tots, 5.12b at Smith Rock, Oregon [8]

* 1985 : Wolfgang Gullich climbs Punks in the Gym, Mt. Arapiles, (some say the first 5.14a/b some say 5.13d)

* 1986 : Antoine Le Menestral climbs La Rage de Vivre, Buoux, (many credit this as the first 5.14a) [24]

* 1987 : Wolfgang Gullich climbs Wallstreet, Frankenjura, 5.14b

* 1990 : Ben Moon climbs Hubble, Raven Tor, 5.14c

* 1991 : Wolfgang Gullich climbs Action Directe, Frankenjura, 5.14d

* 1992 : John Middendorf and Xaver Bongard climb The Grande Voyage, in 18 days on the world's tallest sheer rock face, Great Trango Tower, Karakoram, considered the hardest big wall climb in the world. 5.10+,A4+,WI4

* 1994 : Lynn Hill makes the first free climbing ascent of the 3,000 foot Nose Route of El Capitan (~5.13). Although there had been many ascents of the Nose, none had been done entirely without artificial aid. For years this had been the most coveted goal in the world of rock climbing. [8]

* 1995 : Fred Rouhling climbs Akira, Charente, ~5.15

* 1998 : Bernabe Fernandes climbs Orujo, Malaga, ~5.15

* 2001 : Chris Sharma climbs Realization, Ceuse, ~5.15 [25]

@source = wikipedia.org
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History of rock climbing

Although the practice of rock climbing was an important component of Victorian mountaineering in the Alps, it is generally thought that the sport of rock climbing began in the last quarter of the nineteenth century in at least three areas: Elbsandsteingebirge, in Saxony near Dresden [1], the Lake District of England [2], and the Dolomites in Italy [3]. Rock climbing evolved gradually from an alpine necessity to an athletic sport in its own right, making it imprudent to cite a primogenitor of the latter in each of these three locales. Nevertheless, there is some general agreement on the following:


* Heralded as a sport in England in the late 1880s after the (well publicised) solo first ascent of the Napes Needle by Walter Parry Haskett Smith, rock climbing attracted increasing numbers of participants. An early benchmark approaching modern levels of difficulty was the ascent, by O. G. Jones, of Kern Knotts Crack (VS) in 1897. Jones was attracted to the new sport by a photo of the Needle in a shop window in the early 1890s. By the end of the Victorian era as many as 60 enthusiasts at a time would gather at the Wastwater Hotel in the Lake District during vacation periods [4].

* Inspired by the efforts of late 19th century pioneers such as Oskar Schuster (Falkenstein, Schusterweg 1892), by 1903 there were approximately 500 climbers active in the Elbsandstein region, including the well-known team of Rudolf Fehrmann and the American, Oliver Perry-Smith; their 1906 ascent of Teufelsturm (at VIIb) set new standards of difficulty. By the 1930s there were over 200 small climbing clubs represented in the area [1].

* The solo first ascent of Die Vajolettürme in 1887 by the 17 year-old Munich high school student, Georg Winkler, encouraged the acceptance and development of the sport in the Dolomites[3].

As rock climbing matured, a variety of grading systems were created in order to more accurately compare relative difficulties of climbs. Over the years both climbing techniques and the equipment climbers use to advance the sport have evolved in a steady fashion.@ source :wikipedia.org
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