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Tuesday, Feb 24 2015 by

A sinkhole, also known as a sink, sink-hole, shakehole, swallet, swallow hole, or doline (the different terms for sinkholes are often used interchangeably), is a depression or hole in the ground caused by some form of collapse of the surface layer. Some are caused by karst processes—for example, the chemical dissolution of carbonate rocks or suffosion processes. Sinkholes may vary in size from 1 to 600 m (3.3 to 2,000 ft) both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may be formed gradually or suddenly, and are found worldwide.

The Cherokee Sink (Google Maps)
The Cherokee Sink

Zacatón Sinkhole (Google Maps)
Zacatón Sinkhole
Bayou Corne sinkhole (Google Maps)
Bayou Corne sinkhole

Lago di Doberdò sinkhole (Google Maps)
Lago di Doberdò sinkhole

Sarisariñama sinkhole (Google Maps)
Sarisariñama sinkhole

Dashiwei tiankeng sinkhole (Google Maps)
Dashiwei tiankeng sinkhole
Site of 2007 Guatemala City Sinkhole (Google Maps)
Site of 2007 Guatemala City Sinkhole

Xiaozhai Tiankeng sinkhole (Google Maps)
Xiaozhai Tiankeng sinkhole