Where's the path?

Iain, one of my customers recently introduced me to this site: http://wheresthepath.googlepages.com/wheresthepath.htm Ordnance Survey mapping and aerial images are displayed side by side. You can type in a place then navigate around the map, while the map cursor is mirrored on the aerial view, so you can see exactly where you are on the ground. Great for looking for trackways and other features. Modern OS mapping is used initially but OS have imposed a limit, so the site switches to 1940s OS out of copyright maps once the limit is reached. That's not really a problem for metal detectorists and it may be an advantage since the aerial images are still recent - you can compare the modern landscape with a 50 year old map. Take a look!