Nam Rut Waterfall - meaning Tay is the rain waterfall. The waterfall is 35 km from the center of Thai Nguyen city, on the way from La Hien (kilometer 18 national highway 1B) to the Than Sa archaeological site. In the rainy season, in the midst of majestic mountains, on the top of a limestone mountain with many forest trees, white streams eroded down the Nghinh Tuong River to create a large waterfall. But in the dry season, the water was only enough to soak through the rocks on the cliffs, falling into the blue river that sparkled across the river in the sunshine. Nam Rut - a beautiful waterfall rarely.