Nagatokyo is a valley located upstream of the Abu River, which straddles Yamaguchi City and Hagi City in Yamaguchi Prefecture, and is designated as a national scenic spot. The V-shaped valley, formed by the erosion of the Abu River over many years, is characterized by a beautiful landscape created by the varied rock surfaces and clear streams. In particular, the colorful nature attracts many tourists during the season of new greenery and autumn leaves. There is a promenade along the valley, so you can enjoy a leisurely stroll. Most of the roads are relatively flat, but there are some slopes and rocky areas.

The promenade is generally about 5.1 km one way from Nagatokyo Roadside Station to Ryugubuchi, and the round trip is 10.2 km, taking about 4 hours. Along the way, there is the "Nagatokyo Roadside Station" where you can eat, take a break, and purchase local specialties. The landscape created by the deep green of the valley, clear water, and strange rocks shows different expressions in each season, and there are new discoveries every time you visit. This is a popular spot for photography enthusiasts, and is especially recommended for those who want to take pictures of the beautiful valley.

[Useful points of concern]
The promenade is relatively well-maintained, but some areas are difficult to walk on and slippery. Be especially careful after rain and in winter. In addition, the total length is about 10.2 km, so if you are not confident in your physical strength or have small children, we recommend that you plan your trip in advance. There are some places where mobile phone signals are difficult to receive, so it is a good idea to prepare in advance by downloading a map, etc.