Lake of Truchillas Nature · Truchas, La Cabrera, León A lagoon of glacial origin at the foot of the Vizcodillo massif, declared a Natural Monument on 11 October 1990 by Decree 192/1990; the protected area covers 1,066 hectares of cirques, moraines and boulder fields. Known in Cabreirés as Llagu Truitiellas, it lies in the lower part of the Eria valley, in the south of the municipality of Truchas, bordering the province of Zamora; the Vizcodillo peak, which presides over the whole, reaches 2,121 metres. Photo: lugarzen (CC BY-SA 2.0) What to see and do in Truchas