Mea Peak Nature · Aller, Caudal, Asturias Image of Aller, not of the place itself. A 1,557-metre summit shared by Aller and Laviana, recognisable by the Ojo de Buey, a wide opening that pierces the rocky crest. On its Aller flank, next to Pelúgano, one of the busiest climbing schools in the central mountains operates. Photo: jlmaral from Mieres, España (CC BY-SA 2.0) What to see and do in Aller