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

Ingo Arndt / Aboriginal Rock Art / depicting human figure / Anbangbang Gallery / Nourlangie Range / Kakadu National Park, Northern Territory, Australia

Paul D Stewart / Chromolithograph illustration of Cromagnon 'Skull of an old man' Plate 1, Section C. Edouard Lartet and Henry Christy. 'Reliquiae Aquitanicae' 1865-1875, Williams and Norgate, London 1875..

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

Nick Upton / Neolithic Dolmen de Fontanaccia portal tomb ("The Devil's Forge") erected around 6000 years ago. Cauria, Corsica, France, May 2010.

Inaki Relanzon / Dolmen d'Eyna at night, with a long exposure capturing star trails. Eyne, Pyrenees, France, September 2010.

Inaki Relanzon / Limestone formations under a heavy sky. Torcal de Antequera Nature Reserve, Malaga, Spain, November 2009.

Brent Stephenson / The fallen Moai at Ahu Hanga Tetenga with the coastline in the background. Hanga Tetenga, Easter Island, October 2009.

Daniel Heuclin / Theropod dinosaur tracks preserved in Lower Jurassic (200 million years old) rock. Near Tuba City, Arizona, USA

Oriol Alamany / Moai face at the restored archaeological site of Ahu Ko Te Riku in Tahai Ceremonial Center in Hanga Roa, Easter Island (Pascua or Rapa Nui), Unesco World Heritage Site, November 2004

Oriol Alamany / Rock paintings of Terns (Sterna sp) at Ana Kai Tangata cave, Easter Island (Pascua or Rapa Nui), Pacific Island, Unesco World Heritage Site, November 2004

SINCLAIR STAMMERS / Fossil of a Trilobite (Olenellus / Olenellus gilberti Meek) from the Lower Cambrian period, Chisolm shale, Pioche formation, Half Moon mine, Pioche, Nevada, USA. Pete Lawrance collection