US-Mexico Border Fence / Great Wall of Mexico
Secure Fence
The US and Mexico share a common border of about 2,000-miles (3,200-km). As of February 10, 2012, the Department of Homeland Security had completed 651 miles of fencing out of nearly 652 miles mandated by Congress, including 299 miles of vehicle barriers and 352 miles of pedestrian fence.
Pedestrian Fence
http://www.globalsecurity.org/securi...n-image1-s.jpg
http://www.globalsecurity.org/securi...n-image2-s.jpg
http://www.globalsecurity.org/securi...exico-wall.htm