Mawsynram

A town with the highest measured rainfall in the world. Mawsynram gets 11,873 mm per year – 20 times more than in London. Most of the rain falls in June – August.

Xiaozhai tiankeng

Largest sinkhole (tiankeng) in the world, up to 662 meters deep, 625×535 meters across.

El Zacaton sinkhole

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.