Appennino Tosco-Emiliano National Park is a state-held natural preserve in Northern and central Italy, located in the heart of an area noted for natural features and for the local quality products and handicrafts. It was founded in 2001, and is included in the provinces of Massa and Carrara, Lucca, Reggio Emilia and Parma.

Lago del bicchiere (glass lake) is located along CAI path n.717.at an height of 1724m.

Source: wikipedia

The original equirectangular image is on flickr