Stonehenge

From The Independent 12/10/2012

A detailed laser scan of the entire monument has discovered 72 previously unknown Early Bronze Age carvings chipped into 5 of the giant stones.

More info :

independent.co.uk/news/science/archaeology/revealed-early-bronze-age-carvings-suggest-stonehenge-was-a-huge-prehistoric-art-gallery.8202812.html