SU0318 : Dorset Cursus
Dorset Cursus originally consisted of a pair of parallel banks about 90m apart and ran for six miles. Very little can be seen of it now. The photograph is taken from the middle of the cursus. I could see no evidence of it from this position.
Spot on - Although the OS have been kind enough to show the route of the cursus on the 1:25000 map, most of it only shows up as crop marks or soil marks during hot and dry weather. I've written about the "elusive" Dorset Cursus (with plenty of photos and intepretive photos) here:
http://www.megalithic.co.uk/article.php?sid=1377
Very interesting prehistoric landscape around here - neolithic, bronze age, iron age and Roman.