El Zacaton sinkhole

El Zacaton and Nacimiento spring

The second deepest water-filled sinkhole in the world. The total depth of the sinkhole is 339 m, the lake is 319 m deep. On the surface of the lake, there are floating several round travertine islands. Lake is formed by volcanically heated acidic groundwater.

Poza Seca, Sistema Zacaton

One of the unique travertine capped sinkholes in Sistema Zacatón: formerly open sinkhole has sealed itself with a limestone lid. Most likely it hides unknown life forms, not investigated.

Laguna Colorada in Sistema Zacaton

The rounded sinkhole – Laguna Colorada – belongs to the unique Sistema Zacatón. Laguna Colorada is filled with emerald colored water…