Dorokyo Gorge in the Yoshino Kumano National Park. The river gorge with its cobalt blue pools, created by natural forces over many thousands of years, is a sublime sight. You'll have a special trip down to the beautiful Dorokyo George on the Kawasemi riverboat. Passengers are usually not allowed to get off the boat, but this plan will allow you to land on the bank where you can have a bento lunch box featuring local delicacies.