Zacatón, Water-filled sinkhole in Tamaulipas, Mexico
El Zacatón extends 339 meters deep into the limestone bedrock, making it one of the deepest known water-filled sinkholes on Earth.
The first documented record of El Zacatón dates to 1795 when Félix María Calleja, the viceroy of New Spain, mentioned its presence in official records.
Local residents named the sinkhole after the floating grass islands that move across its surface according to wind patterns.
Access to El Zacatón requires permits from private property owners, and diving activities are limited to experienced professionals and scientific expeditions.
Scientists discovered three new bacterial phyla in the water, establishing El Zacatón as a site of exceptional microbiological diversity.
Location: Tamaulipas
GPS coordinates: 22.99335,-98.16133
Latest update: May 27, 2025 08:52
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