Sistema Zacaton

El Zacaton sinkhole, Mexico

Unique karst field created by thermal acidic waters heated by volcanic heat. Contains the world’s deepest water-filled sinkhole, the 339 meters deep El Zacatón sinkhole with 319 meters deep lake, and floating islands. Poza Seca is one of the unique travertine capped sinkholes of Sistema Zacatón – here the formerly open sinkhole has sealed itself with a limestone lid. Most likely it hides unknown life forms, not investigated.

Poza del Caracol, Sistema Zacaton

One of the prominent features of the unique Sistema Zacatón is Poza del Caracol – small, very deep sinkhole that is not fully explored.