David Touchette
EPFL Valais Wallis
GR B0 420 (Bâtiment GR)
Station 2
CH-1015 Lausanne
Web site: Web site: https://river.epfl.ch
Web site: Web site: https://clubmontagne.epfl.ch
EPFL Valais Wallis
GR B0 420 (Bâtiment GR)
Station 2
CH-1015 Lausanne
Web site: Web site: https://river.epfl.ch
Web site: Web site: https://clubmontagne.epfl.ch