Ryuokyo Ravine

Ryuokyo Ravine, the Dragon King Gorge, is a striking stretch of the Kinugawa River northeast of central Nikko, where the water has cut through ancient volcanic rock to create a landscape of sheer cliffs, jagged black crags, churning rapids and deep emerald-green pools. The rock was formed by undersea volcanic eruptions some 22 million years ago and later thrust up and carved by the river; its writhing, powerful shapes reminded people of a dragon, giving the gorge its evocative name.

A well-made walking course roughly three kilometres long runs the length of the ravine between Ryuokyo Station and the resort town of Kinugawa Onsen. The trail leads past a series of named beauty spots and crosses the river on suspension bridges that hang high above the water, offering the finest views straight down into the gorge. Along the way are small waterfalls, rapids and calm jade pools, as well as a shrine dedicated to the dragon deity said to dwell here. The route undulates and includes some steps, making it a moderate but very manageable half-day walk.

Autumn is the signature season. From late October into early November the maples, oaks and other broadleaf trees cloaking the gorge walls turn vivid red, orange and gold, and reflected in the green water they create some of the best foliage scenery in the wider Nikko area. Spring brings fresh green and, in places, cherry and azalea colour, while summer offers cool, shaded walking beside the rushing river. The gorge is quieter and less internationally known than the Okunikko waterfalls, so it often feels refreshingly uncrowded.

A major bonus is the neighbouring hot-spring town of Kinugawa Onsen at the downstream end of the trail. After walking the ravine you can soak in one of its many riverside baths, several with views over the same Kinugawa River, before heading home - an ideal combination of light hiking and relaxation. The area also offers pleasure boats, rope activities and family attractions nearby.

Ryuokyo lies in the northern part of the Nikko area, separate from the shrine district and the Okunikko highlands, and is reached by a scenic local railway rather than the mountain buses. This makes it a good choice for a change of pace or a second day in Nikko, especially in autumn when the whole valley glows.

To get there, ride the Tobu line toward Kinugawa Onsen and continue on the connecting Yagan Railway Aizu Kinugawa Line to Ryuokyo Station; the trailhead is a three-minute walk from the platform. A rewarding plan is to walk one-way downstream from the station to Kinugawa Onsen, crossing the suspension bridges for the dramatic views, then finish with a hot-spring bath before catching the train back. Wear sturdy shoes for the uneven, stepped path and aim for late October if you want peak colour.