In the eastern reaches of India, just north  of Bangladesh, lies one of the wettest places on earth. Each year brings 15 meters of rainfall. If a traditional wooden bridge were to be built in Cherrapunji over a waterway, it would quickly rot or be taken away by the rapid swells of water. So, instead of building bridges with dead wood, the locals have been building living bridges here for over 500 years. A latticelike network of roots and vines is trained by generation after generation to create living bridges that span lengths of over one hundred feet. The native Ficus Elastica (rubber tree) is guided from one side of the river across to the other, where it roots on the opposite shore as well.  It can take ten to fifteen years to nudge a bridge into functionality and no one person can maintain a bridge over its lifetime. This is a multigeneration collaboration. PermacultureForest -- See another video here: www.snotr.com