Did you know? Mexico has the deepest water-filled sinkhole in the world, in Tamaulipas
As vertical shafts go, this is a seriously deep one! Long considered to be “bottomless” since no-one had ever managed to find the floor, we now know it is precisely 335 meters (1099 feet) deep, making it the deepest water-filled sinkhole anywhere on the planet. The El Zacatón sinkhole is on El Rancho Azufrosa, near […]
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