A badly eroded area crossed by dry canyons carved by violent floods that temporarily formed in the winter. This extraordinary desert and fossiliferous deposit area has a total area of ​​330 square kilometers.

This silent fantastic looking semi-arid region is inhabited by some families grazing goats and cattle and moyas obtain water from digging in the earth. The temperature is high during the day and at night benign. The rainy season corresponds to the months of April, May, October and November and the dry season is concentrated in the months of July, August and September. Along with St. Augustine and Tierradentro Tatacoa is one of the most popular tourist destinations of Huila.

As species are rattlesnakes, arachnids (spiders and scorpions), eagles, lizards and weasels. In times past were ocelots. The fossils of mollusks, turtles, rodents, armadillos and giant sloths found by scientists have led to the proposal that originally should have Tatacoa exuberant flora diversified plant species and tree strata. Many of these fossils can be seen in the Archaeological Museum works in the chapel of Santa Barbara in Villavieja.