The late Neolithic Age site of The Balnuaran of Clava, popularly known as Clava Cairns, dating from 2500 BCE.
This image was first published on Flickr.
Original image by Dave Conner. Uploaded by Mark Cartwright, published on 21 October 2012 under the following license: Creative Commons: Attribution-NonCommercial-ShareAlike. This license lets others remix, tweak, and build upon this content non-commercially, as long as they credit the author and license their new creations under the identical terms.