The spectacular Xiaozhai Tiankeng in southwest China's Chongqing is one of the world's largest sinkholes with a depth of 666 meters.

A wonderland in summer: Scenery of Xiaoqikong scenic spot in SW China's #Guizhou offers a period of delight summer time for visitors to escape from the burning sunshine with its gentle breeze and clear streams.

The World's Biggest Sinkhole

Tiankeng is a geological wonder... - Discover Guangxi China

BOBOVR Z4 | VR Google Cardboard Headset Review