Dorset Downs

The Dorset Downs form a stretch of chalk downland near the centre of Dorset in south-west England. They sit at the western end of a long chalk ridge that continues east through Cranborne Chase, Salisbury Plain and the South Downs. The hills rise gently from the Blackmore Vale on the north and fade into heathland towards Dorchester in the south. The River Stour cuts a valley between the Downs and Cranborne Chase on the east, while the River Frome marks the southern limit of the main chalk mass. A narrower chalk strip runs along the coast east of Weymouth and forms the Purbeck Hills. The Downs hold a large underground water store that supplies much of Dorset’s drinking water. Their chalk soil feeds seasonal streams called winterbournes that flow only when the water table is high. Farmers manage arable fields, woodland and calcareous grassland, encouraged by subsidies to protect this habitat. The Dorset Down sheep breed began here and still grazes the slopes. Natural England has recognised the Downs and Cranborne Chase together as a National Character Area, bounded by heaths, lowlands and the Marshwood and Powerstock Vales. Visitors walk the ridges and scarp faces of hills such as Bulbarrow Hill, the highest at 274 m, or Hambledon Hill and Hod Hill, outliers of Cranborne Chase. The Cerne valley contains the Cerne Abbas Giant, a large hill figure. Blandford Forest, Milton Abbas with its 18th-century planned village, and Minterne House’s rhododendron garden offer contrasting scenery. Earthworks like Nettlecombe Tout hill fort and Ringmoor settlement show the Downs’ ancient past, while the Dorsetshire Gap provides a steep valley route through the chalk.