Aubrey Manning visits the chalk hills of England to investigate their origins and along with a team of archeologists from Reading University try to establish a date in which they were produced
A hill figure is a large visual representation created by cutting into a steep hillside and revealing the underlying geology. It is a type of geoglyph usually designed to be seen from afar rather than above. In some cases trenches are dug and rubble made from material brighter than the natural bedrock is placed into them. The new material is often chalk, a soft and white form of limestone, leading to the alternative name of chalk figure for this form of art.
Hill figures are common in England: examples include the Cerne Abbas giant, the Uffington White Horse, the Long Man of Wilmington, various badges of military units as well as the "lost" carvings at Cambridge, Oxford and Plymouth Hoe.