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Mässersee is the smallest of four mountain
lake
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much lar ...
s in the upper
Binntal
The Binn Valley ( German: ''Binntal'') is a valley of the Alps, located on the north side of the Lepontine Alps in the Swiss canton of Valais. The valley is drained by the ''Binna'', a tributary of the Rhone, at Grengiols. The valley is named ...
(''Binn valley'') of the canton of
Valais
Valais ( , , ; frp, Valês; german: Wallis ), more formally the Canton of Valais,; german: Kanton Wallis; in other official Swiss languages outside Valais: it, (Canton) Vallese ; rm, (Chantun) Vallais. is one of the 26 cantons forming the S ...
,
Switzerland.
Lakes of Valais
{{Valais-lake-stub