Geoheritage sites are natural features of the Earth that are considered to be unique within Western Australia and to have significant geoscientific and educational values. The register of the State's Geoheritage Sites is maintained by the Geological Survey of Western Australia and made available to the public. Documentation of sites has largely been carried out by the Geological Monuments Subcommittee of the Geological Survey of Australia, and is stored in written reports. The digital database has been derived from these reports, and is linked to a Geographic Information System which provides broad characteristics for any registered site by reference to a site ID.