Portal:Mountains

A crevasse is a deep crack that forms in a glacier or ice sheet. Crevasses form as a result of the movement and resulting stress associated with the shear stress generated when two semi-rigid pieces above a plastic substrate have different rates of movement. The resulting intensity of the shear stress causes a breakage along the faces. (Full article...)

Phnom Voar (Khmer: ភ្នំវល្លិ) is a small range of mountains in southern Cambodia. The mountain range is located in Damnak Chang'eaur District of Kep Province, near the border with Kampot Province. This relatively isolated range became notorious as a battleground during the Cambodian Civil War, when it was a base for communist insurgent forces and the target of significant bombing by B-52s and other air strikes.

The main north south railway line between Phnom Penh and Sihanoukville runs along the base of the mountain. National road 33 between Kampong Trach and Kampot also runs nearby. However, there are few roads or paths within the mountains and only two permanent communities: Chamkar Bei and Rones villages. (Full article...)

A somma volcano, also known as a sommian, is a volcanic caldera that has been partially filled by a new central cone. The type is named after Mount Somma ("Summit"), a stratovolcano in southern Italy with a summit caldera in which the upper cone of Mount Vesuvius has grown. Other examples of somma volcanoes can be found on Russia's Kamchatka Peninsula and the Kuril Islands, stretching south from Kamchatka to Hokkaidō, Japan.

Some examples of somma volcanoes are the following: (Full article...)

Rock-climbing equipment varies with the type of climbing undertaken. Bouldering needs the least equipment outside of shoes and chalk and optional crash pads. Sport climbing adds ropes, harnesses, belay devices, and quickdraws to clip into pre-drilled bolts. Traditional climbing adds the need for carrying a "rack" of temporary passive and active protection devices. Multi-pitch climbing (and big wall climbing) adds devices to assist in ascending and descending fixed ropes. Finally, aid climbing uses unique equipment (e.g. aiders).

Advances in equipment are a key part of the rock climbing history, starting with the climbing rope. Modern devices enable climbers to perform tasks that were previously done manually, and with greater control (in all conditions) and less effort. Examples of replacements include the harness (replaced tieing the rope around the waist), the carabiner (replaced many knots), the descender/abseil device (replaced the dülfersitz), the ascender (replaced the prusik knot), the belay device (replaced the body belay), and nuts/hexes (replaced chockstones). (Full article...)

The FIS Freestyle World Ski Championships is the world championship organized by the FIS for freestyle skiing. It was first organized in 1986 and is now held every odd year. Currently, the disciplines included in the World Championships are Aerials, Moguls, Dual Moguls, Ski cross, Half-pipe, Slopestyle and Big air. Formerly, Acroski and a combined event were held. (Full article...)

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