Claim: Smokejack Clay Pit is a 56.0 hectares (138 acres) geological site (SSIs or areas of conservation, consisting of protected areas, recognised for their geological significance) in Surrey.
Evidence: Smokejack Clay Pit is a 56-hectare (140-acre) geological Site of Special Scientific Interest east of Cranleigh in Surrey. A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of Man.