The Saucha Negra gorges

The gorges are the manifestation of a typical limestone landscape. These steep walls are the result of the action of rainwater which, charged with carbonic gas, dissolve the limestone and penetrate into the rocks, creating underground drainage networks which grow gradually bigger. Then the upper part collapses and the river flows in the open air, trapped between two vertical walls. The return journey to pick up the itinerary takes place along the same track.