Lake Ragogna is of morainic origin, it was formed about 12,000 years ago in a depression in the hills after a slow melting process of the Tiliaventino glacier which at that time
it occupied the so-called plain of Osoppo.
Recognized by the European Community as a naturalistic site of Community interest due to its naturalistic peculiarities, it is characterized by an elliptical shape, has a diameter of about 700 m. with an area of 25 hectares and the current dimensions – about a quarter of the original ones due to a reclamation carried out in the 1930s – and has a depth that reaches 9-10 meters.
[text source: “Tra colline, fiume, lago e monte”]
