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.

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.