Cherrapunji in northeastern India, is famous for its living bridges. The people of these villages (Nongriat, Laitkynshew and others) are isolated from the rest of the world as they live in deep valleys which can only be reached by arduous trek. Over hundreds of years the people in Cherrapunji have developed techniques for growing roots of trees into bridges. They plant the strangler fig trees on both sides of the river and once they grow they use guides such as bamboo poles or string for the roots to grow around them. The process takes 10 to 15 years and the bridges typically last hundreds of years, the oldest ones in use being over 500 years old.
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