Mole Gap to Reigate Escarpment is a 1,016.4-hectare (2,512-acre) biological and geological Site of Special Scientific Interest west of Reigate in Surrey.

[4] Part of it is a Nature Conservation Review site, Grade I.

[5] Two small private nature reserves in the site are managed by the Surrey Wildlife Trust, Dawcombe[6] and Fraser Down.

[7] This eight mile long site on the North Downs contains an outstanding range of wildlife habitats, including large areas of woodland and chalk grassland.

Mole Gap has a variety of Quaternary landforms and there are well developed river cliffs where alluvial fans have diverted the River Mole against the valley sides.