Describe the process of making living root bridges in Meghalaya.

Living root bridges are crafted by the indigenous Khāsi and Jaintia tribes using roots of the Ficus elastica tree. They guide roots across streams with bamboo and palm trunks. Over many years, the roots grow stronger and twist into natural bridges. Some take decades or even centuries to mature and can last hundreds of years. These living structures are nurtured over generations and reflect local people's knowledge about Nature.