This page will link to various maps for the Leysin region, including maps to Alpine Club outings. Maps created specifically Alpine Club and Science trips are shown on other pages in Resources.
Ian Spare, Swiss Mountain Leader, has written a brief description of the best online mapping systems, which you can read on his blog, here. We will update this soon with our own comments.
Swiss Federal Topo Map: https://map.geo.admin.ch/
Switzerland Mobility Map: https://map.schweizmobil.ch/