Chinese sinkholes unearth 'new wonders' | BBC News

In southern China, scientists have discovered ancient forests with animals and plants they thought were extinct in several sinkholes. The sinkholes have formed over tens of thousands of years and have only recently become visible when the land collapsed. They're now being explored with the help of local mountaineers. Subscribe here: http://bit.ly/1rbfUog For more news, analysis and features visit: www.bbc.com/news #China #BBCNews