Cuatro Ciénegas (Four Marshes) is a 84.4 hectare biosphere reserve located near a city with the same name in the northern arid state of Coahuila. According to the NASA, it is highly likely that Cuatro Ciénegas could be a strong link to life on Mars due to the food chain of the unique flora and fauna that inhabit the region that resembles that of 550 million years ago and the species ability to survive the extreme conditions in the region such as the lack of phosphorus in the waters and the high solar radiation that hits it. Cuatro Ciénegas is often compared to the Galapagos Islands in Ecuador due to its rich and varied flora and fauna. The reserve is mostly famous for its colorful pools of water that house live stromatolites and white sand dunes.
The reserve is the home to more than a hundred species of flora and fauna that are unique to the area and hence, it is highly protected by the Mexican government and many conservation leaders. Aside from that, there are colonies of cyanobacteria that have become extinct in the rest of the world.
The main attractions include, but are not limited to: