Introduction to Nieka Waterfall: Nieka Waterfall is about 1 km east of Dagu Village. "Nyika" means "fish mouth" in Tibetan. Every year at the turn of spring and summer, fish from the lower reaches gather here and wait for the water to rise to swim upstream, forming a natural fish bank with a capacity of nearly one thousand cubic meters per second. The river water poured down, causing the fish to roll up and down. Neka Falls is formed because a huge round rock blocks the direct flow of the river. In winter, the water level drops, and the river overflows from both sides of the round rock, forming two large falls of 6 meters high; in summer, the water level rises, and the water flows from The top of the boulders falls down, making a deafening roar, forming a waterfall with a height of 7-8 meters. It is a major scenic spot on the Brahmaputra River.