San Luis Potosi, Mexico
The Sótano de las Golondrinas, or “Cave of Swallows” is one of the greatest attractions of the Huasteca area of the state of San Luis Potosí, Mexico. It is located near the town of Aquismón in an area rife with water and lush vegetation. This giant sinkhole, with a main shaft that plunges to a depth of 370 meters (1,220 feet)f from its highest rim and a gaping elliptical mouth measuring about
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