sentences:  Picos de Europa is one of several biosphere reserves in the Cantabrian Mountains which are being integrated into a single super-reserve to be known as "Gran Cantábrica".The total area of the park is 646.60 km² and is shared by Castilla y León, Asturias, and Cantabria.The highest point of the park is in Torre de Cerredo peak, 2,648 m AMSL and the lowest point is 75 m AMSL in the Deva River, that is, a vertical drop of 2,573 m.
  
  The geological features of the park show the effects of glacial erosion on the limestone massifs that form the Cantabrian Mountains.