Nick Turner / Close up of Stonehenge stones at night, Wiltshire, England, Uk, September 2009.

Bryan and Cherry Alexander / At the end of the Chukchi Festival of Young Reindeer', Rita Votgyrgina, collects small stones to place on burial mound (Melgynvyn) where the powdered bones of sacrificed reindeer are buried, close to...

Will Watson / Arthur's Stone, a Neolithic chambered tomb dating between 3700 and 2700 BC, Golden Valley, Herefordshire, England, May 2013.

Adrian Davies / Lichens including Xanthoria parietina and Ochrolechia parella on tombstones in village churchyard. Slapton, Devon, England, UK, July 2013.

Enrique Lopez-Tapia / Grave covered with red rocks, near Old Whaling Station. Deception Island. Antarctica

Enrique Lopez-Tapia / Graveyard with rubble covered graves, old whaling station. Deception Island, Antarctica.

Paul Harcourt Davies / Etruscan rock tombs at Norchia, near Vetralla, Lazio dating from 2nd - 4th century BC. Norchia, near Viterbo, Lazio, Italy, November 2011

Angelo Gandolfi / Aerial view of the Valley of the Lente, which is dotted with ancient and culturally significant Etruscan tombs. Sorano, Tuscany "Maremma", Italy. April 2009

Angelo Gandolfi / Interior of an Etruscan tomb of "Colombai". Some of the tombs were later turned into dovecotes, to house domestic pigeons. Sovana, Tuscany "Maremma", Italy. March 2009

Angelo Gandolfi / An Etruscan tomb called "Sirena" (the Siren)Sovana, Tuscany "Maremma", Italy. March 2009

Angelo Gandolfi / Interior of an Etruscan Ildebranda tomb. Sovana, Tuscany "Maremma", Italy. March 2009

Angelo Gandolfi / View of the Etruscan tombs at Poggio Prisca cliff. Sovana, Tuscany "Maremma", Italy. December 2008