The Natural Area of the Sierra de la Demanda Nature · Valmala, Montes de Oca, Burgos Image of Valmala, not of the place itself. Valmala is one of the municipalities included in this protected area, articulated around the sierras of San Millán, Mencilla and Neila. Beech, oak and Scots pine woods dominate, with notable patches of holly. Photo: F Ceragioli (CC BY-SA 4.0) What to see and do in Valmala