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Island Peak
Sacha Wettstein
Sandra Greulich
Sacha Wettstein
Profession: Master of science in biology and professional mountain guide UIAGM (IVBV)
Sacha converted his greatest hobby into a second profession: He guides high alpine tours, back country skiing tours (skitours), trekkings and is a sportsclimbing trainer. He realizes mappings in different projects as a biologist. As author of a topographic map of the Island Peak he has gained experiences in cartography and has expressed his passion as a drawer and designer of maps.
Sandra Greulich
Profession: Cartographer, topographer
Sandra has many years of working experience in cartography in Switzerland and abroad. During one year she lived in Nepal, where she was working on different cartographic projects. She works at Swisstopo as a topographer. During the summer months she's mostly doing fieldwork in which she realizes the necessary steps to verify the map contents and by doing so to keep the Swisstopo maps up to date. To live her passion as a mountaineer she spends her spare time in the mountains as often as possible.
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