"Mattmark dam is a reservoir in the Saas Valley of the Canton of Valais, Switzerland. The Mattmark dam was built from 1960–1965. The lake´s surface area ...
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is 1.76 km2 (0.68 sq mi).
The lake lies at a height of 2,197 metres above sea level, between the massifs of the Rimpfischhorn and Stellihorn. The highest peak visible from the lake is the Strahlhorn (4,190 m)." - (en.wikipedia.org 12.08.2021)
- Latitude46.038055419922
- Longitude7.960000038147