Quarry Hangers is a 28.5-hectare (70-acre) biological Site of Special Scientific Interest south-west of Caterham in Surrey.

[1][2] An area of 11 hectares (27 acres) is a nature reserve managed by the Surrey Wildlife Trust.

[3] This sloping site on the North Downs has species-rich chalk grassland, woodland and scrub.

Heavily grazed areas are dominated by red fescue and sheep’s fescue, with flowering plants including horseshoe vetch, bird’s-foot trefoil and wild thyme.

There is a taller sward in less grazed areas, with grasses such as upright brome and wood false-brome.