There is nice hiking course on the Iai Valley.
Sandan Falls (三段の滝) is three step-waterfalls located in Namboku, Gunma. It has 50m high in total, and considered as one of three major waterfalls in Namboku.
Tourist Info.
There is a parking and Restroom. Takes 30 min by walking from the parking.
Access
0. at Maebashi Station.
1. use JR Ryomo Line to Takasaki (15 min.)
2. use Joshin Line to Shimonita (1hr.)
3. use taxi to Sandannotaki.
20 min
There is nice hiking course on the Iai Valley.