The Worlds 18 Strangest Tunnels (w pics)
SOURCE: DIGG • 2010-01-27
TOPICS:
Tunnels • Human Interest • Hospitality_recreation
[114 diggs @ Odd Stuff] Tunnels, whether bored through imposing mountains or laid hundreds of feet under water, are inspiring feats of engineering. Here, Popular Mechanics presents a collection of the world's most interesting and impressive tunnels. read more »