There are 48 Nachi falls in Mt. Nachi. The fist falls is what every one considered as Nachi Falls. It is 133m talls and 13m wide. As a single straight falls, it is the tallest waterfalls, and even in total, it is top 12 waterfalls in Japan.
There is a shrine on the bottom of the falls.
Title of UNESCO
"Sacred Sites and Pilgrimage Routes in the Kii Mountain Range."