Isle of Portland The borough and nearby Chickerell have been a Fairtrade Zone since 2007. The Isle of Portland lies in the English Channel, south of Wyke Regis, and west-southwest of London, at (50.55, −2.44). Portland is situated approximately halfway along the UNESCO Jurassic Coast World Heritage Site; the site includes of the Dorset and east Devon coast that is important for its geology and landforms. The South West Coast Path runs around the coast; it is the United Kingdom's longest national trail at . Portland is unusual as it is connected to the mainland at Abbotsbury by Chesil Beach, a tombolo which
Geology of Dorset to erosion as the chalk was folded and forced upwards. The early deposits from this period, found across South-East England, do not occur in Dorset. The small amounts found in Devon however, coupled with the many solution holes found across the Dorset chalk, suggests that erosion may have removed them. Some of the larger solution holes, known as dolines, are found on the heaths between Dorchester and Bere Regis. Near Briantspuddle is Culpepper's Dish, 86 metres wide and over 21 metres deep. The first deposits found from this period in Dorset are the Reading Formation clays. A sub-division of the