The Magdalena Valley dry forests ecoregion is located in Colombia along the upper Magdalena River. There are many endemic species, but much of the original habitat has been destroyed by agriculture and over-grazing.
This ecoregion, located between the between the Eastern and Central cordilleras of the Northern Andes, occurs along the dry inter-Andean valley formed by the Magdalena River, which is the largest in Colombia.
The Magdalena Valley dry forests ecoregion is in the valley of the upper Magdalena River, a river that flows north through the Andes to the Caribbean. It has an area of 19,748 sq km (7,625 sq mi).
The dry forests are almost entirely surrounded by the Magdalena Valley montane forests ecoregion. At its northern end the dry valley merges into the Magdalena-Urabá moist forests.
The climate is dry and vegetation includes cacti such as Armathocereus humilis and Stenocereus griseus. Vegetation in the Tatacoa Desert is thorny, and includes cactus species such as Opuntia and Melocactus species.
Fauna biodiversity is relatively unknown, but includes a few endemic subspecies such as the burrowing owl (Athene cunicularia tolimae), tropical bobwhite (Colinus cristatus leucotis), and euphonia (Euphonia concinna).
Agriculture, and overgrazing, especially from introduced goats, has destroyed much of the original habitat. The World Wildlife Fund gives the ecoregion the status of "Critical/Endangered".