The main article content on this page (titled: "Counterscarp") was retrieved on the fly from Wikipedia (i.e., your page access date equals the data retrieval date).

All article text on this website (VisWiki.com) derived from Wikipedia, is licenced under the terms of the GNU Free Documentation License. Article images, with the exception of video thumbnails, are entirely from Wikipedia, and their copyrights should follow accordingly. All videos and video thumbnails shown on this site are from YouTube. Other visual/semantic contents are mine.
Note to former VisualWikipedia users: The domain name VisualWikipedia.com has recently been renamed to VisWiki.com. I'll add more useful featrures here, so please update your bookmark accordingly :)