Canyoning and hot springs
Just 20 mins from downtown Kusatsu is Deer Canyon, one of the best technical courses in Japan. A great mix of rapells, jumps and sliders with the largest waterfall being around 35m (Full day course). The course is suitable for first timers that are up for a real adventure. NOTE: Currently only guided in Japanese
Nearby there are a number of great onsen (hot springs) including Shiriyaki Onsen where the springs permeate through a natural river bed.