Laguna Negra de Urbión

Laguna Negra de Urbión is a glacial lake located at an altitude of 2000 meters above sea level in the Picos de Urbión mountains. They are surrounded by dense pine forests and high granite walls.
According to a local legend, the lake has no bottom and is connected to the sea by underground tunnels and caves, it is said that a mysterious monster lives in it, which eats everything in the water.