The Brisons consist of two islets around 1 mile (1. For human anatomy see Islets of Langerhans An islet is a small Island. 6km) off Cape Cornwall and Priest's Cove beach, in Cornwall, they are around 25m high. Cape Cornwall ( Cornish: "Pen Kernow" is a small headland in Cornwall, England, UK four Miles north of Land's Priest's Cove is a beach in Penwith, Cornwall, UK. It is close to Cape Cornwall and St Just in Penwith. Cornwall ( Kernow ˈkɛɹnɔʊ is the most southwesterly county of England, on the Peninsula that lies to the west of the River Tamar