Villagers create 'living' bridges by training roots across a river

The Atlas Obscura article that has a bit more information: http://atlasobscura.com/place/root-bridges-cherrapungee

There is a similar bridge [1] in my parents' hometown (Man, Ivory Coast, West Africa). But over there, the legend says that it was created by spirits and that they come out at night to fix it. It's been there for decades.

[1] http://www.flickr.com/photos/r_dorion/522774639/in/photostre...