Category: Outdoor Scenes
Photo and caption by Aaron Ortiz
The sun sets over Los Mesquites, in the Chihuahan desert. Los Mesquites is a series of connected pools in the desert oasis of Cuatro Ciénegas, Coahuila, Mexico. A biological reserve, the pools in Cuatro Cienegas contain some of the few live stromatolites in the world. Stromatolites are colonies of cyanobacteria, which are thought are responsible for our oxygen-rich atmosphere. About 150 species are endemic to Cuatro Cienegas and its surrounding mountains, some of them extremophiles. These species make the valley relevant in studying how life came to be in extraterrestrial environments.
Location: Cuatro Ciénegas, Coahuila, Mexico