Banwell Caves (grid reference ST383588) are a 1.7-hectare geological and biological Site of Special Scientific Interest near the village of Banwell, North Somerset, England notified in 1963. The site comprises two caves, called 'Banwell Bone Cave' and 'Banwell Stalactite Cave', which lie within the grounds of a large house, at the western end of Banwell Hill. The caves contain barite deposits, which are found in greater abundance and variety here than at any other site in the Mendip Hills, and are used as a hibernation site by greater horseshoe bats (Rhinolophus ferrumequinum).