The glacial lakes of Neila Nature · Neila, Sierra de la Demanda, Burgos A group of lakes formed in glacial cirques surrounded by peaks of around 2,000 metres, south of the Sierra de la Demanda, declared a nature park on 9 December 2008, covering the 6,290 hectares of the municipality of Neila. It is divided into two groups: the Lagunas Altas, at the foot of the La Campiña massif —Larga, Negra, de la Cascada, Corta, de Los Patos, Brava and de Las Pardillas—, and the lagunas Oruga and Muñalba, to the southeast. Between 1969 and 1972 the complex was converted for tourism and fishing use, with dikes and paths that altered the moraines; the structural problems of those dikes and the wish to restore the site to a natural state led, between 2001 and 2002, to the removal of the dike at laguna Corta and the lowering of those at Larga and de la Cascada. Photo: No machine-readable author provided. Gafotas assumed (based on copyright claims). (Public domain) What to see and do in Neila