If you've budgeted an extra day for Nikko, you might want to consider a walk around the lake. A paved road along the north shore extends for about 8 km (5 miles), one-third of the whole distance, as far as the "beach" at Shobu-ga-hama. Here, where the road branches off to the north for Senjogahara, are the lovely cascades of Dragon's Head Falls. To the left is a steep footpath that continues around the lake to Senju-ga-hama and then to a campsite at Asegata. The path is well marked but can get rough in places. From Asegata it's less than an hour's walk back to Chuzenji village.
Nikko, Tochigi-ken, Japan