Tag:sinkhole=bluehole
Jump to navigation
Jump to search
 sinkhole = bluehole
|
 |
| Description |
|---|
A vertical, underwater sinkhole, named after the deep blue color they mainly show. 
|
| Group: natural |
| Used on these elements |
    |
| Requires |
| Useful combination |
Status: approved
|
| Tools for this tag |
|
A bluehole is a vertical, underwater sinkhole, named after the deep blue color they mainly show. It is typically an area outside natural=coastline, but can be a node if too small to be mapped as an area.
When used on an area, this does not need to be an inner polygon in a multipolygon relation, or otherwise disconnected or excluded of the surrounding waters, as it is included in them, owing to its nature.
Example
The 
Great Blue Hole, a bluehole in Belize, would be an area tagged this way:
natural=sinkhole sinkhole=bluehole name=Great Blue Hole depth=124