GeoMôn or Anglesey Geopark, was admitted to the European Geoparks Network and to the UNESCO-assisted Global Network of National Geoparks in May 2009. It is the second Geopark to be designated in Wales and the seventh within the United Kingdom.
Originally geoconservation on Anglesey was administered by the Gwynedd and Mon RIGS group, but a decision was taken to apply for Geopark membership. GeoMôn is a limited company, registered at Companies House, which administers the Geopark and currently has 4 directors, two geologists and two Isle of Anglesey County Council officials. The Geopark is based around the extraordinary diversity of its geology which encompasses solid rocks from the Precambrian to the Neogene with some Miocene sediments and extensive Pleistocene glaciation features from the Quaternary period.
One outstanding feature of the Geopark is its commitment to publicising the importance of soil diversity in the landscape, biodiversity and land use. Dr John Conway, Principal lecturer at the Royal Agricultural College, has written a field guide and also presented papers on this theme at the European Geopark Networks conference in Scotland in 2007 and at the UNESCO Global Geopark conference in Germany in 2008.