This route follows a section of the Mole Gap Trail, running between Leatherhead and Dorking, and passes through Norbury Park and the Mole Valley’s protected landscapes. The walk begins at Leatherhead Station, a name derived from Old English Leodridan, meaning “place where people ride” or possibly “clearing in the woods.” From there, the path heads south into the Mole Valley, a corridor designated as a Site of Special Scientific Interest due to its chalk grassland, woodland, and river habitats.

Norbury Park has documented history dating back to the Domesday Book. The estate has passed through several notable owners, including the Locke family in the 18th century, who developed parts of the landscape and built Norbury Park House. Today, the area is managed for conservation and public access.

The route includes one steep ascent within Norbury Park and was muddy underfoot during this walk, particularly on woodland sections. It is suitable for dogs, with open fields, woodland tracks, and clear waymarking. Seasonal fungi were abundant along the trail, especially in shaded areas.

The final section descends into the river valley before reaching Boxhill & Westhumble Station. Box Hill takes its name from the native box trees (Buxus sempervirens) that grow on its chalk slopes, while Westhumble likely originates from Old English Humbol, meaning “river meadow.” The surrounding hills and the River Mole create a varied landscape of chalk escarpments, meadows, and woodland typical of the North Downs.