In the north-east India there is very humid and warm climate that promotes the formation of violent rivers. On the bank of the river Rubber Ficus grows very rapidly. Many years ago, local tribes have noticed that some of the roots of Ficus elastica grows outward. And using this feature of the tree, they decided to use it for their personal purposes - to build bridges.
With the help of special devices Aborigines began sending their roots in the right direction. More than 500 years they managed to grow a multitude of bridges, many of whom are over 60 meters in length. Natural structures can withstand the weight of about 50 people and resistant to flooding. These living bridges are the cheapest and most reliable means of transportation through many turbulent rivers in the region of the country.