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

England, Cumbria, Lake District National Park. Langstrath Beck running through the landscape of Stonethwaite Fell along the Cumbria Way track.

New Zealand, Nelson & Marlborough, Golden Bay. Limestone outcrops near the summit of Takaka Hill.

New Zealand, Nelson & Marlborough, Golden Bay. Limestone landscape of the Grove Scenic Reserve near Clifton.

Grange Stone Circle, County Limerick. 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.

Carrowmore Megalithic Cemetery, County Sligo. 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.

Beltany Stone Circle, County Donegal. 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.

Beaghmore Stone Circle, County Tyrone. 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.

Aikey Brae Stone Circle, Aberdeenshire, Scotland. 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.

Tyrebagger Stone Circle, Aberdeenshire, Scotland. 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, Aberdeenshire, Tyrebagger Stone Circle. First light of the day illuminates the recumbent stone circle at Tyrebagger on the outskirts of Aberdeen over looking the Airport.

Scotland, Aberdeenshire, Tyrebagger Stone Circle. First light of the day illuminates the recumbent stone circle at Tyrebagger on the outskirts of Aberdeen over looking the Airport.

Midmar Kirk Stone Circle, Aberdeenshire, Scotland. 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.

Cullerie Stone Circle, Aberdeenshire, Scotland. 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.

Lundin Links Stone Circle, Fife, Scotland. 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, Fife, Lundin Links Stone Circle. A frosty morning at Lundin Links Stone Circle located on the second fairway of the Ladies golf course.

Easter Aquhorthies Stone Circle, Aberdeenshire, Scotland. 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.

Loanhead of Daviot Stone Circle, Aberdeenshire, Scotland. 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.

Cothiemuir Wood Stone Circle, Aberdeenshire, Scotland. 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.

Old Keig Stone Circle, Aberdeenshire, Scotland. 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.

Auchquhorthies Stone Circle, Aberdeenshire, Scotland. 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.

Whitehill Stone Circle, Aberdeenshire, Scotland. 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.

Sunhoney Stone Circle, Aberdeenshire. 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.

Clune hill Stone Circle, Aberdeenshire. 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.

Nine Stanes Stone Circle, Aberdeenshire. 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.

The Three Kings, Northumberland. 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.

Newgrange, County Meath. 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.

Drombeg Stone Circle, County Cork. 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.

Cashelkeelty Stone Circle, County Kerry. 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.

Kealkil Stone Circle, County Cork. 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.

Republic of Ireland, County Cork, Kealkil Stone Circle. The prehistoric site of Kealkil consists of a small five stone circle and two large monoliths.

Shronebirrane Stone Circle, County Kerry. 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.

Republic of Ireland, County Kerry, Uragh Stone Circle. Waterfall behind the prehistoric Uragh Stone Circle which is located between Lough Inchiquin and Lough Cloonee in Gleninchiquin Park, on the Beara Peninsula.

Uragh Stone Circle, County Kerry. 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.

Ardgroom Stone Circle, County Cork. 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.

Derreenataggart Stone Circle, County Cork. 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.

Republic of Ireland, County Clare, The Burren at Black Head. Grike and Clint in the limestone karst-landscape of The Burren near Galway Bay.

Republic of Ireland, County Clare, The Burren at Black Head. Grike and Clint in the limestone karst-landscape of The Burren near Galway Bay.

Poulnabrone Dolmen, County Clare. 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.

Republic of Ireland, County Clare, Poulnabrone Dolmen. Poulnabrone Portal Dolmen, an ancient stone tomb dating between 2000 – 2500 B.C., situated on limestone pavement in an area know as 'The Burren'.

Ballynoe Stone Circle, County Down. 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.

Threestoneburn Stone Circle, Northumberland. 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.

Duddo Five Stones, Northumberland. 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.

Callanish Stone Circle (No 4), Isle of Lewis. 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.

Callanish Stone Circle (No 3), Isle of Lewis. 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, The Isle of Lewis, Callanish Stone Circle. Callanish Stone Circle, a famous neolithic monument located on the Isle of Lewis in the chain of islands known as the Outer Hebrides.

Scotland, The Isle of Lewis, Callanish Stone Circle. Callanish Stone Circle, a famous neolithic monument located on the Isle of Lewis in the chain of islands known as the Outer Hebrides.

Scotland, The Isle of Lewis, Callanish Stone Circle. Callanish Stone Circle, a famous neolithic monument located on the Isle of Lewis in the chain of islands known as the Outer Hebrides.

Scotland, The Isle of Lewis, Callanish Stone Circle. Callanish Stone Circle, a famous neolithic monument located on the Isle of Lewis in the chain of islands known as the Outer Hebrides.

Scotland, The Isle of Lewis, Callanish Stone Circle. Callanish Stone Circle, a famous neolithic monument located on the Isle of Lewis in the chain of islands known as the Outer Hebrides.