Alpine skiing (or "downhill skiing") is the sport of sliding down snow-covered hills on skis with fixed-heel bindings. Alpine skiing can be contrasted with nordic skiing, in which skiers use free-heel bindings. (Types of nordic skiing include cross-country, ski jumping and Telemark.) Alpine skiing may take place at a ski resort where mechanical ski lifts have been installed to transport skiers up the mountain and where snow is groomed, avalanches are controlled and trees are cut to create trails. Alternatively, alpine skiers may pursue the sport in less controlled environments; this practice is variously referred to as ski touring, backcountry skiing or extreme skiing. The sport is named for the European Alps where it originated in the late 1880s. Today, it is popular wherever the combination of snow, mountain slopes, and a sufficient tourist infrastructure can be built up, including parts of Europe, North America, Australia and New Zealand, the South American Andes and East Asia.