The Gastlosen offers numerous climbing routes and the finest practice area. Easily accessible, but charismatic, it spellbinds climbers. Florence Nikles and Sébastien Monney belonged to a small group of elite expedition team members of the Swiss Alpine Club (SAC). Florence has been climbing on the Gastlosen ever since she can remember and has never stopped. Sébastien accompanies ambitious mountaineers who wish to explore the north face, for example. Both of them play a part in awakening or sustaining the enthusiasm of many people for climbing.