Mexico
Sand Origin
Holbox beach in front of Palpas del Mar
Random Sand Fact
Can sand dissolve in water?
At Cuatro Ciénegas in Mexico, white sand dunes are made of gypsum rather than ordinary quartz.
That is unusual because gypsum dissolves in water and rarely accumulates into large dune fields. Here, the dry climate and high evaporation allow crystals to remain, break down into grains and gather into white dunes.
