The Dungeon SSSI

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The Dungeon
Site of Special Scientific Interest
Cave in The Dungeon, Thurstaston 3.jpg
The Dungeon SSSI is located in Merseyside
The Dungeon SSSI
Location within Merseyside
Area of Search Merseyside
Grid reference SJ251831
Coordinates 53°20′10″N 3°06′22″W / 53.336°N 3.106°W / 53.336; -3.106Coordinates: 53°20′10″N 3°06′22″W / 53.336°N 3.106°W / 53.336; -3.106
Interest Geological
Area 1.2 hectares, 2.8 acres (11,000 m2)
Notification 1977 / 1987
Natural England website

The Dungeon is a 1.2 hectare Site of Special Scientific Interest (SSSI) situated 1 mile north-west of Heswall, on the Wirral Peninsula, England. The site was notified in 1988 due to its geological features which show the Tarporley Siltstone Formation of the Mercia Mudstone Group.


  • Natural England citation sheet

External links

  • Metropolitan Borough of Wirral: The Dungeon (SSSI)
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