Rock carvings of the La Caldera cave Curiosity · Berzosilla, Montaña Palentina, Palencia Image of Berzosilla, not of the place itself. In the immediate surroundings of the village opens the cave of La Caldera, where rock carvings are preserved that attest to a very ancient occupation of this corner of the valley, on the northeastern edge of the province. Photo: Jlaso1982 (CC BY-SA 4.0) What to see and do in Berzosilla