England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Prehistoric standing stones within the Southern Inner Circle, situated within the South East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Avebury Henge looking towards the prehistoric standing stones of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Prehistoric standing stones within the Southern Inner Circle, situated within the South East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Prehistoric standing stones situated along the Avenue leading to Avebury Stone Circle from West Kennet Long Barrow.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Silbury Hill a prehistoric artificial chalk mound located near Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Prehistoric standing stones within the Southern Inner Circle, situated within the South East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Prehistoric standing stones within the Southern Inner Circle, situated within the South East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Avebury Henge looking towards the prehistoric standing stones within the Southern Inner Circle, situated within the South East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Avebury Henge, with a standing stone within the Northern Inner Circle, situated within the North East Sector of the Avebury Prehistoric Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Prehistoric standing stones within the Northern Inner Circle, situated within the North East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). The Cove, a formation of prehistoric standing stones within the Northern Inner Circle, situated within the North East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). Prehistoric standing stones within the Northern Inner Circle, situated within the North East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). The Cove, a formation of prehistoric standing stones within the Northern Inner Circle, situated within the North East Sector of the Avebury Stone Circle.

England, Wiltshire, Stonehenge & Avebury World Heritage Site (WHS). The Cove, a formation of prehistoric standing stones within the Northern Inner Circle, situated within the North East Sector of the Avebury Stone Circle.

Scotland, North Ayrshire, Isle of Arran. Prehistoric stone circle on Machrie Moor, on the autumn equinox.

Scotland, North Ayrshire, Isle of Arran. Machrie Moor 2 Stone Circle on Machrie Moor, on the autumn equinox. This image was photographed for the Legacy project, a fascinating not-for-profit endeavour to capture the mystifying stone remains of prehistoric sites scattered across the British Isles. Please visit www.thelegacyproject.org.uk for more information.

Scotland, North Ayrshire, Isle of Arran. Prehistoric stone circle on Machrie Moor, on the autumn equinox.

England, Cumbria, Little Salkeld. Long Meg and her daughters, one of the finest stone circles to be found in the north of England.

England, Oxfordshire, Rollright Stones. The Whispering Knights dolmen is a 5000 year old burial chamber, believed to be part of a Neolithic long barrow

England, Cumbria, The Lake District. The popular Castlerigg Stone Circle near Keswick, dating back from the later Neolithic period.

England, Cumbria, The Lake District. The popular Castlerigg Stone Circle near Keswick, dating back from the later Neolithic period.

England, Cumbria, Lake District National Park. The popular Castlerigg Stone Circle near Keswick, dating back from the later Neolithic period. The mountain in the distance is Blencathra.

England, Cumbria, The Lake District. The popular Castlerigg Stone Circle near Keswick, dating back from the later Neolithic period.

England, Cumbria, Little Salkeld. Long Meg and her daughters, one of the finest stone circles to be found in the north of England, and the second biggest in the country.

The Ring of Brodgar, Orkney Islands. This image was photographed for the Legacy project, a fascinating not-for-profit endeavour to capture the mystifying stone remains of prehistoric sites scattered across the British Isles. Please visit www.thelegacyproject.org.uk for more information.

England, Cumbria, Swinside Stone Circle. The name of the Sunkenkirk stone circle, also known as Swinside, is derived from the ancient belief that the circle of stones are the remains of an ancient church (kirk) sunk into the ground by a strike from the Devil.

England, Cumbria, Swinside Stone Circle. The name of the Sunkenkirk stone circle, also known as Swinside, is derived from the ancient belief that the circle of stones are the remains of an ancient church (kirk) sunk into the ground by a strike from the Devil.

Scotland, Orkney Islands, Standing Stones of Stenness. The Standing Stones of Stenness, a Neolithic stone circle monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Skara Brae Prehistoric Village. Skara Brae, a stone-built Neolithic settlement, located on the Bay of Skaill on the west coast of Mainland Orkney and forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Skara Brae Prehistoric Village. Skara Brae, a stone-built Neolithic settlement, located on the Bay of Skaill on the west coast of Mainland Orkney and forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Skara Brae Prehistoric Village. Skara Brae, a stone-built Neolithic settlement, located on the Bay of Skaill on the west coast of Mainland Orkney and forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Skara Brae Prehistoric Village. Skara Brae, a stone-built Neolithic settlement, located on the Bay of Skaill on the west coast of Mainland Orkney and forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Skara Brae Prehistoric Village. Skara Brae, a stone-built Neolithic settlement, located on the Bay of Skaill on the west coast of Mainland Orkney and forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Skara Brae Prehistoric Village. Skara Brae, a stone-built Neolithic settlement, located on the Bay of Skaill on the west coast of Mainland Orkney and forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Skara Brae Prehistoric Village. Skara Brae, a stone-built Neolithic settlement, located on the Bay of Skaill on the west coast of Mainland Orkney and forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, The Ring of Brodgar. The Ring of Brodgar, a Neolithic stone circle and henge monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Standing Stones of Stenness. The Standing Stones of Stenness, a Neolithic stone circle monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Standing Stones of Stenness. The Standing Stones of Stenness, a Neolithic stone circle monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Standing Stones of Stenness. The Standing Stones of Stenness, a Neolithic stone circle monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site

Scotland, Orkney Islands, Standing Stones of Stenness. The Standing Stones of Stenness, a Neolithic stone circle monument on the mainland of Orkney, Scotland, forming part of the Heart of Neolithic Orkney World Heritage Site