Mountaineering is another word for the sport of mountain climbing. If high altitudes and low temperatures are your thing, you should take up mountaineering.
Climbing in snowy and ice-covered places requires special equipment and extreme care, watching out for dangers like falling ice and rocks, storms, and avalanches. In some parts of the world, mountaineering is called "alpinism." Originally, the noun mountaineer was a seventeenth century word for "mountain dweller." Two hundred years later, it came to mean "mountain climber."