The ravine of las Cárcabas Nature · Belorado, Montes de Oca, Burgos Image of Belorado, not of the place itself. The Cárcabas stream has dug a ravine of reddish sandstone at the foot of the hill crowned by the ruins of the castle; the whole forms a natural viewpoint over the plain of the Tirón and over the caves opened in the rock. Photo: Zarateman (CC BY-SA 3.0) What to see and do in Belorado