Cuatro Cienegas is located in the state of Coahuila in northern Mexico. In Spanish you might see it written as one word (Cuatrociénegas) or two (Cuatro Ciénegas).
It’s an interesting area. Cuatro Ciénegas means “Four Marshes”. In current scientific terminology, a cienega is a special kind of marsh which exists only in Mexico and the Southwest U.S.
The Cuatro Cienegas area has 150 endemic species of plants and animals, including 3 endemic turtles and 8 endemic fish.
In the city you can visit the house of famous son Venustiano Carranza, considered the Father of the Mexican Constitution.
Outside the city there are natural pools, including the Poza Azul (the blue pool) and the La Poza de la Becerra (Pool of the Calf). You can also visit Las Dunas de Yeso, “the Dunes of Plaster”.
Here is a photo I took of the Blue Pool:
And here is a photo taken from space of the Cuatro Cienegas Basin. You can see several pools:
