A tree falling into a sinkhole
Media playback is unsupported on your device

Sinkhole swallows a whole tree

22 August 2013 Last updated at 14:47 BST

A massive sinkhole in the American state of Louisiana has sucked in land and whole trees.

A sinkhole appears when the ground gives way and everything above it falls into the resulting hole.

Rocks in the ground can be weakened by rainfall until they crumble or collapse and the sinkhole forms.

Sinkholes like this are very rare and the emergency services are monitoring it.

Homes in the area are not thought to be in any danger