Guy Edwardes / Pentre Ifan, a Neolithic burial chamber, Nevern, Pembrokeshire, Wales, UK. November 2008

Guy Edwardes / Lanyon Quoit ancient burial chamber, Madron, Cornwall, England, UK. September 2015.

Ashley Cooper / Men an Tol stone near St Just in Cornwall, UK. This late Neolithic monument is thuoght to have been part of a now disappeared stone circle or an entrance to an old burial chamber

Graham Eaton / Carreg Samson, a 5000 year old Neolithic dolmen or burial chamber, near Abercastle, Pembrokeshire, Wales, UK, June

Graham Eaton / Pentre Ifan a Neolithic burial chamber, ported dolmen, chambered tomb, Aberteifi, Pembrokeshire, Wales, UK, June

Graham Eaton / Pentre Ifan a Neolithic burial chamber, ported dolmen, chambered tomb, Aberteifi, Pembrokeshire, Wales, UK, June

Phil Savoie / St Lythans Burial chamber, a 6000 year-old Neolithic chamber with a 35 ton capstone at dawn, Vale of Glamorgan, Wales, UK, February

Phil Savoie / Herringbone stonewall at Tinkinswood Neolithic Burial Chamber from 6000 years ago. Wales, UK. February.

Juan Carlos Munoz / Kenmare stone circle, Kenmare, Iveragh Peninsula, County Kerry, Republic of Ireland. September 2015.

Guy Edwardes / Lanyon Quoit ancient burial chamber, Madron, Cornwall, England, UK. March 2010.

Guy Edwardes / Sunrise casting rays through stones of Lanyon Quoit ancient burial chamber, Madron, Cornwall, England, UK. February 2006.

Christophe Courteau / La Roche-aux-Fees (Fairies' rock) dolmen / tomb. Esse, Ille-et-Vilaine, Brittany, France, December 2013.