These sports are considered adventure travel par excellence. Extreme ski consists of going down quite a steep mountain with nothing but your skis. People practicing this activity have to use this technique in its maximum expression, giving priority to safety rather than to downhill speed.
Hiking or walking is an activity practiced in all kinds of terrains and is not restricted to age, gender or physical fitness.
As in every task, there are various levels of difficulty, which can be surpassed gradually as experience is gained. The routes are divided into four types of difficulty: relaxed, medium, steady and difficult.