This geological fracture is located near Parras de la Fuente and is a canyon with magnificent and narrow landscapes with walls that can measure up to 40 m high. 

It is known as El Negro, because it is said that more than a century ago a man was lost in its strange rock formations and was never found. On the way you can find narrow passages, multiple descents, small pools and it is one of the places where you can practice various activities.

The tour takes approximately 4 hours.