|natural = sinkhole|
|A natural depression or hole in the surface topography|
|Used on these elements|
|Tools for this tag|
A sinkhole, also known as a sink, shake hole, snake hole, swallow hole, swallet, doline, or cenote, is a natural depression or hole in the surface topography caused by the removal of soil or bedrock, often both, by water and/or by collapse of an underlying cavity. A typical form of a sinkhole is a crater. Sinkholes are abundant on karst plateaus.
Don't mix this up with a polje, which is much larger, or with a natural=cave_entrance. On the bottom of a sinkhole, however, there may be a cave entrance. In this case, you may wish to map both, if the sinkhole is of remarkable size; or the cave entrance only, otherwise.