San Justo Heights Nature · Langreo, Nalón, Asturias Image of Langreo, not of the place itself. At 1,011 metres it is the greatest height in the municipality, at the southern end of the district, where the summits are around a thousand metres alongside Pico Cogollín and Picu les Cruces. That whole upper strip is included in the protected landscape of the Cuencas Mineras. Photo: LMLM (CC BY-SA 3.0) What to see and do in Langreo