Nine Ladies Stone Circle, Derbyshire. 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.

Arbor Low Stone Circle, Derbyshire. 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.

Seven Stones Of Hordron, Derbyshire. 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.

Stonehenge, Wiltshire. 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.

Wayland's Smithy, Oxfordshire. 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.

Avebury Stone Circle, Wiltshire. 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.

Mayburgh Henge, Cumbria. 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.

Birkrigg Stone Circle, Cumbria. 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.

Swinside Stone Circle, Cumbria. 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.

White Moss SW Stone Circle, Cumbria, England. 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.

White Moss NE Stone Circle, Cumbria, England. 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.

Blakeley Rise Stone Circle, Cumbria. 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.

Greycroft Stone Circle, Cumbria. 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.

Castlerigg Stone Circle, Cumbria, England. 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.

Long Meg and her Daughters, Cumbria. 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.

Croft Moraig Stone Circle, Perthshire. 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.

Aviemore Stone Circle , Scottish Highlands. 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. 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.

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

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.

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, 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

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

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, Northumberland, Duddo Five Stones. The pre-historic stone circle known as the Duddo Five Stones (and four stones) located in Northern Northumberland.

England, Northumberland, Duddo Five Stones. The pre-historic stone circle known as the Duddo Five Stones (and four stones) located in Northern Northumberland.

England, Northumberland, Duddo Five Stones. The pre-historic stone circle known as the Duddo Five Stones (and four stones) located in Northern Northumberland.

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.