The rock-cut necropolis of Cuyacabras Nature · Quintanar de la Sierra, Sierra de la Demanda, Burgos Image of Quintanar de la Sierra, not of the place itself. Three kilometres from the village, an outcrop of sandstone holds 166 anthropomorphic tombs and thirteen niches cut into the rock, some on vertical ledges. Beside it, the Cueva Andrés preserves a horseshoe arch carved in stone. Photo: CSN2406 (CC BY-SA 4.0) What to see and do in Quintanar de la Sierra