Furong Cave is a karst cave located on the banks of the Furong River, 20 kilometres (12 mi) from Wulong County town, Chongqing, People's Republic of China.
First discovered by local farmers in 1993 the cave was opened to tourists in 1994. It became a national 4A tourist site in 2002 then in June 2006 part of the South China Karst UNESCO World Heritage Site ; the only cave in China on the UNESCO list. In 1994, 1996 and 2001, cave experts from countries including China, the UK, USA, Ireland and Australia undertook comprehensive explorations of the cave.
Furong Cave has a total length of 2,846 metres (9,337 ft) and a width varying from 30 metres (98 ft)-50 metres (160 ft). Inside, the cave is divided into three sections, with the first featuring colorful subterranean features. The remaining two areas focus on the science of cave formation. There are more than 30 features inside the cave including the 15.76 metres (51.7 ft), 21.04 metres (69.0 ft) stone waterfall at the foot of which coral-like projections extend to 120 centimetres (47 in).
In the vicinity of the cave spread over a total area of around 20 square kilometres (7.7 sq mi), there are more than 50 vertical shafts with a depth of over 100 metres (330 ft). including the 920 metres (3,020 ft) deep Steam Shaft , the deepest in Asia. Formed during the Cambrian/Ordivician Periods some 500 million years ago, the cave features numerous rarely found speleothems including coral and dog-tooth like crystalline calcite flowers as well as a variety of helictites, and crystalline gypsum flowers.
On January 26, 2003, 29 days after filling of the nearby Jiangkou Reservoir began, an earthquake measuring 3.5 on the Richter magnitude scale hit the reservoir's dam causing stalactites on the roof of the cave to collapse. Changes to the water table brought about by the reservoir's construction have also affected the cave and drainage of the surrounding karst landscape.