Thorncombe Beacon is a hill situated between Bridport and Charmouth in Dorset, England. It lies about 1km west of Eype Mouth and 2km east of Seatown. It is in the very south-west part of Symondsbury parish close to the parish of Chideock. It lies close to the South West Coast Path and the Monarch's Way, which skirt the hilltop. It is 157m high, compared to 191m for Golden Cap which lies about 3km to the west.
The hill is owned by the National Trust and forms part of the Jurassic Coast, a World Heritage Site. The Jurassic Coast stretches over a distance of 153 kilometres (95 mi), from Orcombe Point near Exmouth, in the west, to Old Harry Rocks on the Isle of Purbeck, in the east .[1] The coastal exposures along the coastline provide a continuous sequence of Triassic, Jurassic and Cretaceous rock formations spanning approximately 185 million years of the Earths history. The localities along the Jurassic Coast includes a large range of important fossil zones.