I have visited Nakatsu Valley four times over the last three years. I thought it was a beautiful locale. Then I went canyoning with Niyodo Adventure and saw it in a whole new light. It is an absolutely GORGEOUS area! We had the opportunity to enter the river from beneath a waterfall! I have never heard of other canyoning services offering such an experience. The course was also appropriate for novices. It was my first time canyoning, and I felt safe while getting my adrenaline rush. I would highly recommend this to anyone visiting Niyodogawa Town.