People climb on frozen water. They use sharp tools to hold on. They wear boots with spikes on them. 
Ice climbing is a sport on frozen water. Climbers go up frozen waterfalls or big icicles.
They use special tools to climb. They use two axes with sharp ends. They also wear boots with metal spikes.
To stay safe, they use ice screws. These are metal tubes. They screw into the ice. 
Some people climb on rock and ice. This is called mixed climbing. It can be very hard.
Climbers can even race in big contests. It is a very exciting sport.
Ice climbing is the sport of climbing on frozen water. Climbers go up frozen waterfalls or giant icicles. They also climb high snow paths in the mountains. This sport grew from mountain climbing in the 1970s.
To climb, people use special tools. They use two ice tools. These are axes with sharp, curved tips. They also wear crampons. These are metal spikes on their boots. 
Safety is very important. When leading a climb, the climber uses ice screws. These are metal tubes that screw into the ice. 
Some people do mixed climbing. This means they climb on both ice and rock. They may use tools on bare rock. This is called dry-tooling. At Helmcken Falls in Canada, climbers face huge ice walls. These walls hang over the climber. These routes are the hardest in the world.
Ice climbing is an exciting sport of ascending routes made of frozen water. Climbers might scale a frozen waterfall or a large hanging icicle. They can also climb high alpine snow paths called couloirs. This activity is quite serious because ice can break or change. 
To move up the ice, climbers use very specific tools. They use two ice tools, which are modern versions of ice axes. They also wear crampons, which are metal spikes attached to their boots. 

This sport began as a part of alpine climbing. For a long time, climbers just climbed ice when they saw it on mountain paths. In the 1960s, climbers used pitons, but this was often unstable. Two big changes happened in the 1960s and 1970s. Yvon Chouinard made the "Climax" ice axe with a curved pick. Then, Hamish MacInnes designed the "Terrordactyl" aluminum axe in 1970. These tools helped ice climbing become its own independent sport in the 1970s. These inventions led to more people climbing frozen waterfalls in the Alps and the Rockies.
Climbing difficulty is measured using a special grading system. Most ice routes are vertical and go up to a grade of WI6 or WI7. 
Ice climbing connects to many other ways people climb mountains. It is a key skill for anyone practicing alpine climbing. 
Ice climbing is a technical climbing discipline involving the ascent of routes made of frozen water. Climbers may scale seasonally frozen waterfalls, high alpine couloirs, or massive hanging icicles. Because ice is a changing medium, the sport requires intense focus and specialized gear. 
To ascend, climbers use specific tools to gain purchase on the frozen surface. They use two ice tools, which are modern, ergonomic versions of the traditional ice axe. They also wear crampons, which are metal spikes attached to their boots. Some experts use mono-point crampons for better accuracy or vertical front points for more cutting power. 
Safety during a lead climb depends on protecting the route with specialized hardware. The primary tool is the ice screw, a hollow, threaded steel tube with cutting teeth. 

Ice climbing routes are categorized by several distinct types and styles. Traditional ice climbing focuses on frozen water or snow fields. Mixed climbing occurs when a route includes both ice and bare rock.
Historically, ice climbing began as a subdiscipline of alpine climbing. For years, climbers encountered ice while traversing mountain routes. In the 1960s, early climbers used pitons, but these were often unstable and dangerous. The sport changed forever when Yvon Chouinard designed the "Climax" ice axe with a curved, serrated pick. Shortly after, in 1970, Hamish MacInnes created the "Terrordactyl," an all-metal aluminum alloy axe. These innovations allowed ice climbing to emerge as an independent sport in the 1970s.
Difficulty is measured using a grading system that peaks at WI6 or WI7. 

Since 2002, the UIAA has regulated competition ice climbing through official events. They organize the annual Ice Climbing World Cup and the bi-annual Ice Climbing World Championships. 
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