"Karnaphuli" (Bengali: কর্ণফুলি Kôrnophuli; also spelt Karnafuli), the largest and most important river in Chittagong and the Chittagong Hill Tracts, is a 667 metres (2,188 ft)-wide river in the south-eastern part of Bangladesh. Originating from the Lushai hills in Mizoram, India, it flows 270 km (170 mi) southwest through Chittagong Hill Tracts and Chittagong into the Bay of Bengal. A large hydroelectric power plant using Karnaphuli river was built in the Kaptai region during the 1960s. The mouth of the river hosts Chittagong's sea port, the main port of Bangladesh. "Shah Amanat Bridge", the third constructed across the Karanphuli River in Bangladesh, is the first major cable-supported bridge in the country. It connects the Southern Chittagong, Cox's Bazar and the hill district Banderban.