Lake Idro is an Italian prealpine lake of glacial origin situated largely within the Province of Brescia and in part in Trentino.
At 368 m above sea level it is the highest of the Lombard prealpine lakes. The lake is fed principally by the waters of the river Chiese; that river is also its only emissary. It has a surface area of 11.4 km² and a maximum depth of 122 m.
The lake is surrounded by wooded mountains. From Wikipedia
