Box Hill is a summit of the North Downs in Surrey, approximately 31 km south-west of London. The hill gets its name from the ancient box woodland found on the steepest west-facing chalk slopes overlooking the River Mole. The western part of the hill is owned and managed by the National Trust, whilst the village of Box Hill lies on higher ground to the east. The highest point is Betchworth Clump at 224 m above OD, although the Salomons Memorial overlooking the town of Dorking is the most popular viewpoint.
Box Hill lies within the Surrey Hills Area of Outstanding Natural Beauty and forms part of the Mole Gap to Reigate Escarpment Site of Special Scientific Interest. The north- and south-facing slopes support an area of chalk downland, noted for its orchids and other rare plant species. The hill provides a habitat for 38 species of butterfly, and has given its name to a species of squash bug, now found throughout south-east England.
An estimated 850,000 people visit Box Hill each year.