Gorges of Vegacervera Nature · Vegacervera, La Montaña de Riaño, León The Hoces de Vegacervera natural area, designated on 10 May 1991, extends across the municipalities of Cármenes, Matallana de Torío, Valdepiélago and Vegacervera, in the north of the province of León. The Torío river has carved a canyon in the Paleozoic limestone about 500 metres deep and no more than 15 metres wide at its base, with giant's kettles, sinkholes, dolines and swallow holes typical of an intense karst process; its finest example is the Valporquero cave, whose first level, crossed by an underground river, can be visited and displays stalactites, stalagmites, columns and flowstone. Oak and beech woods grow on the slopes, with willows and poplars on the valley floor, and among its fauna the wolf and the Pyrenean desman stand out. Photo: Yago AB (CC BY-SA 3.0) What to see and do in Vegacervera