Japan's most celebrated gorge road follows a crystal-clear mountain stream for 14km through ancient beech forest — 12 named waterfalls, mossy rock walls, and blue-green water pooling between the stones. The stream flows from one of Japan's deepest caldera lakes (327m), ringed by dark cedar and beech forest. Peak season is mid-October when autumn colour transforms the gorge into a cathedral of red and gold.
Clone it to your planner, customize dates and stops, then ride. All free.