**Keyhole Markup Language** (KML) is an XML notation for expressing geographic annotation and visualization within two-dimensional maps and three-dimensional Earth browsers ([Wikipedia](https://en.wikipedia.org/wiki/keyhole_markup_language)).

The KML format is an [Open Geospatial Consortium](https://www.ogc.org/standards/kml) standard. The KML format was originally developed for use with Google Earth (which was originally named Keyhole Earth Viewer).

| Loader | Characteristic |
| --- | --- |
| File Format | [KML](https://www.ogc.org/standards/kml) |
| File Extension | `.kml` |
| MIME Type | `application/vnd.google-earth.kml+xml` |
| File Type | XML (Text) |

> KML file format support is currently in beta status. Known limitations include
>
> - No support for `.kmz` files
> - No adjustment of geoid-relative elevations
> - Non-geometry features are filtered out

### Sample document   
XML

```xml
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document>
<Placemark>
  <name>New York City</name>
  <description>New York City</description>
  <Point>
    <coordinates>-74.006393,40.714172,0</coordinates>
  </Point>
</Placemark>
</Document>
</kml>
```