The Dungeon is a 1.2-hectare (3.0-acre) 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.
Site of Special Scientific Interest | |
Location | Merseyside |
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Grid reference | SJ251831 |
Coordinates | 53°20′10″N 3°06′22″W / 53.336°N 3.106°W |
Interest | Geological |
Area | 1.2 hectares, 2.8 acres (11,000 m2) |
Notification | 1977 / 1987 |
Natural England website |