You can take the Tobu Bus from JR or Tobu Nikko Station, and get off at Chuzenji Onsen Treminal, for a total 40 min ride. Thereafter, the Kegon Falls are a short walk away.

Gorges de Takachiho
Les gorges de Takachiho sont facilement accessibles depuis Fukuoka, Kumamoto et Miyazaki via des bus directs.