Situated south of Lake Iseo, the reserve includes:

• the Lame (a vast stretch of water hemmed in by banks, a result of cutting of a peat bogs);
• the Lamette (a kind of marshy lagoon to the north, on the lake);
• some basins of water to the south and west (resulting from the excavation of clay pits);
• some meadows and adjacent cultivated fields.

The Reserve has a total area of about 360 hectares. The whole of this area is of great interest because of its size, its location (the morainic anphitheatre of Franciacorta and the Sebino), for its caracteristics of green damp area with outstanding value of natural scenary, for its history and for certain historical and artistic features in the neighbourhood, particularly the Monastery of Saint Peter in Lamosa.