© 2006 Peter Braatz, All Rights Reserved.
It is (or was) 630 km long and consisted of some 18.000 tunnels and bunkers. Built between 1938 and 1940.
More information: http://de.wikipedia.org/wiki/Westwall
(Personal note: as I had a both a HD-RAID crash and logical errors on my system I am happy to get something out at least. That weekend I did not spend as much time there as I had planned...)
Lat: 50° 41' 48.85" N
Long: 6° 9' 26.75" E
Elevation: 0
Precision is: Unknown / Undeclared.