Ryujin Falls: The Blue Fall of Minami-Aizu, Fukushima

Ryujin Falls, on the Arakai River in Minami-Aizu Town, Fukushima, is also called the Blue Fall because its basin glows a jade-like green. Though modest at about four meters high, the beauty of its basin is breathtaking. Enshrining a rain-praying dragon deity, it is a hidden, secluded cascade known only to a few.

Highlights

• A basin glowing jade green, whose beauty earns it the name Blue Fall, a mystical sight.
• A history of faith in the dragon deity who governs rain and water. Legend says a shrine for praying for rain was built here during a drought.
• An approach unique to a secluded place, passing through a red torii gate from the trailhead along the highway.
• Natural stream scenery continuing downstream from the falls. The Arakai River lies in the upper reaches of the Aga River system and carries clear water.

Enjoying the Seasons

From spring into summer the water volume grows and the green basin shines all the more vividly, and walking the valley wrapped in fresh greenery is a pleasure in itself. Autumn colors the surrounding trees, offering a duet of waterfall and foliage. In winter, amid the deep snow typical of Minami-Aizu, the frozen falls feel even more mystical.

Access and Basic Information

• Location: along the Arakai River in the upper Aga River basin, Minami-Aizu Town, Fukushima.
• Minami-Aizu Town is served by the Aizu Railway Aizu Line, with Aizu-Kogen-Ozeguchi and Aizu-Tajima stations as gateways; the falls are reached mainly by car.
• A trailhead sign stands along the highway, and you pass through a red torii gate to proceed.
• The path down to the falls is steep, so slip-resistant shoes are essential.
• As the area is left in its natural state, watch your footing and the weather when visiting.

Practical Travel Notes

• Best season and time: The green shows best on a clear midday when light reaches into the valley. Early summer with high water and autumn with foliage are also rewarding.
• Crowd-avoidance: This is already a quiet spot with few visitors, but weekdays and mornings are best for calm.
• Time needed: About 30 minutes to an hour for the round trip and viewing. Its location makes a half-day to full-day itinerary easy when combined with other Minami-Aizu sights.
• Nearby real spots: Aizu-Tajima in the town center is a former castle town known for its Gion Festival. Toward Oku-Aizu you find Ouchi-juku post town in Shimogo and the Tsukanohetsuri rock formation.
• Budget feel: There is no fee to view the falls. Because Minami-Aizu is deep in snow country, allow extra margin for road conditions in winter.

A Quick Tip

The basin green changes expression with the way the light falls. Visit on a clear midday for the most beautiful blue. The descent is steep, so go slowly and check your footing as you proceed. In winter snow can make access difficult, so the period after the thaw is safest.

📚 Sources

Information on Ryujin Falls (Blue Fall) can be confirmed through public sources from Minamiaizu Town and on-site guidance, and details on the worship of the rain-summoning dragon deity and on the Arakai River in the upper Aga River basin are also helpful. Given the mountain-valley location, winter road conditions can vary, so please confirm on-site and road conditions before you set out.

Visitor Checklist

• Estimated time: About 30 minutes to an hour to walk from the entrance to the falls and back and take in the view. The location makes for an easy half-day to full-day itinerary with nearby Minami-Aizu sights.
• What to bring: The path down to the falls is steep, so non-slip shoes are essential. It is a natural setting, so watch your footing and the weather. Snow can make access difficult in winter, so after the thaw is safest.
• Suggested route: Pass through the red torii at the roadside entrance to reach the falls. After viewing the jade-colored plunge pool, combine Aizu-Tajima, known for its Gion festival, and Ouchi-juku and Tonohetsuri toward Oku-Aizu.

Practical Information for Your Visit

• Location: Within Takihara, Minamiaizu Town, Minamiaizu District, Fukushima Prefecture (the Araikawa River)
• Access: Follow National Route 352 towards the Mount Arakaiyama trailhead. Turn left at the Uo Jiman banner, which serves as a landmark, then turn right at the T-junction and follow the road; you will come to a marker post reading Ryujin Falls Entrance and an information board about the dragon deity. From there you continue on foot to the falls
• Parking: None (there is a wide road shoulder near the entrance)
• Points to note: The path down to the falls is a fairly steep slope, and it becomes even more slippery after rain. Bring sturdy, comfortable footwear and take precautions against bears
• Best time for autumn colours: Usually from mid-October to early November (this shifts depending on the weather)
• Enquiries: Minamiaizu Town Tourism and Local Products Association, tel. 0241-62-3000

Note: No official viewing hours or fees have been announced (this is not a managed tourist facility but a waterfall in its natural state).

(Sources: official website of the Minamiaizu Town Tourism and Local Products Association)