
Guide
Unryu Valley is a stunning canyon located within the boundaries of Nikko National Park. It is most famous for its dramatic winter scenery, featuring a massive frozen waterfall with a 120m drop and a vast expanse of ice pillars stretching 100m wide. During the winter season, specialized trekking tours are held, allowing visitors to walk directly into this frozen world using specialized equipment such as crampons. Following the route up the Inari River, located behind the famous Toshogu Shrine, you will encounter breathtaking walls of ice and frozen pillars formed by the intense cold.
As part of the Nikko National Park, Unryu Valley is surrounded by majestic peaks such as Mt. Nyohō and Mt. Akanagi, which define the unique topography of the region. The phenomenon of the frozen waterfall is a spectacular natural event created by the combination of freezing temperatures and flowing water, serving as an iconic symbol of winter in this part of Nikko.

The primary attraction is the spectacular sight of the frozen waterfall and ice pillars that appear in winter. The 120m high frozen waterfall and the 100m wide ice walls are ephemeral landscapes that can only be witnessed during this specific season. During trekking tours, participants wear crampons to navigate frozen paths, cliffs, and river crossings, allowing for an intimate observation of the intricate ice formations and the changing textures of the terrain.
Unryu Valley presents a completely different face depending on the season. The winter season is the most prominent, centered around the ice waterfall trekking tours. In contrast, the summer and other seasons offer a more traditional lush canyon landscape. If you plan to join a tour, it is essential to confirm that the plan includes winter gear like crampons. For the best experience, it is recommended to visit during the bright daylight hours to fully appreciate the light reflecting off the ice and the detailed textures of the frozen walls.

In winter, professional guides lead