The wild tourist development in these unusual bathing pools endangers certain endemic species, both plants and animals. In 1994, to counter the threats the Mexican government declared the Cuatro Ciénegas valley a biological reserve. (image by Olivier Blaise)
The wild tourist development in these unusual bathing pools endangers certain endemic species, both plants and animals. In 1994, to counter the threats the Mexican government declared the Cuatro Ciénegas valley a biological reserve.
©Olivier Blaise
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