Tag:natural=atoll
 natural = atoll
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A ring-shaped coral reef ithat encircles a lagoon partially or completely, and may include small islands. 
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| Group: natural |
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| Status: in use |
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The tag natural=atoll is used to map an atoll (sometimes called a coral atoll), a ring-shaped coral reef including a coral rim that encircles a lagoon partially or completely, and may include small islands or islets.
How to map
As a node: if the full extent of the atoll, including the reef, cannot be yet be mapped, then place a node at the approximate center of the atoll.
As an area: draw a closed way around the outer border of the reef, including all of the islands and the lagoon within the area. This is the most common way of mapping atolls.
Use a multipolygon relation if the atoll has more than one area; draw two or more closed ways and add each to the relation with role=outer.
- Note: place=island must be use the coastline when mapped as an area or relation, but natural=atoll should include the entire area of the coral reef and lagoon, in addition to any island or islets.
- Consider adding the islands to a multipolygon relation with place=archipelago if the group of islands has a name.
Tags used in combination
See also
- place=island - for tagging each island within the atoll
- place=islet - for very small islands
- place=archipelago - to map the islands of the atoll or a chain of atolls.
- natural=coastline - to map the coast of any islands within an atoll
- natural=reef - to map the reef which surrounds the atoll
Examples
Nukuoro Atoll (from space via NASA)
The coast of Bikini Atoll
Raa Atoll, in the Maldives
Bora Bora aerial view
Tarawa atoll aerial view
Wake Island atoll aerial view
Penrhyn Atoll aerial view
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