Cave of Swallows

Deep in the middle of the Huasteca Postosina region hides Sótano de las Golondrinas, Mexico’s most stunning natural chasm. It is an enormous vertical hollow, a result of the area’s karst geology. Over millions of years, water erosion cut through the limestone soil, creating a natural refuge where you can admire a variety of bird species, especially swifts (easily confused with swallows, explaining the name, Cave of Swallows), as well as parrots, green-cheeked parakeets, and bats.