Oirase Gorge in Aomori: Waterfall Hiking Trail to Lake Towada

Towada is located in the inland region of southeastern Aomori Prefecture. Known for its quiet, sparsely populated landscapes, sightseeing here revolves around scenic mountain walking trails.

The undisputed highlight is the Oirase Mountain Stream—a destination famed for offering "a new view with every step."

Stretching 14 kilometers through lush virgin forest, this trail guides you alongside crystal-clear waterfalls and rushing torrents. Keep your camera ready, as native wildlife like squirrels and small deer frequently make an appearance along the path.

Read on to explore the most breathtaking waterfalls and viewpoints along the stream.

Kumoi Falls

Kumoi Falls stands roughly 20 meters high. Over countless years, its powerful currents have gradually eroded the protruding rock at the top, causing the waterfall to slowly retreat upstream.

This waterfall is a stunning sight—and a reminder that the view before your eyes today may one day disappear forever.

Kudan Falls

Eroded by water over the years, the rocks at Kudan Falls have formed rare, step-like cliffs.

While the waterfall's volume is gentle, its delicate, trickling flow cascades like soft silk, offering a peaceful elegance that sets it far apart from more powerful falls.

Ashura Current

Located in the downstream section of the Oirase Mountain Stream, the Ashura Current features the fastest-flowing waters along the entire path.

Here, clear streams rush over moss-covered rocks, creating a dramatic, beautiful landscape that makes this the most popular photo spot on the trail.

Choshi Great Falls

Measuring 20 meters wide and 7 meters high, Choshi Great Falls produces a magnificent, thunderous cascade—its roaring waters can be heard long before the falls come into view.

Because its powerful current prevents fish from swimming upstream into Lake Towada, it has earned the local nickname "Uo-dome no Taki" (Fish-Blocking Waterfall).

Strolling the Waterfall Walking Trail

The sights of Oirase are scattered along the 14-kilometer trail between the outlet of Lake Towada and Yakeyama. It is an easy, accessible hike, perfect for slowing down and soaking in the surrounding scenery.

What truly defines the Oirase Mountain Stream is its ever-changing terrain and dynamic water flow, dotted with countless waterfalls large and small—truly earning its reputation as a "Waterfall Road."

Where there is water, there are magnificent mountains. Dense forests of cypress, maple, and beech blanket the surrounding hills, standing lush and vibrant green in summer before transforming into a sweeping sea of autumn colors in the fall.

Each season brings its own distinct charm, making every return visit feel like a whole new discovery.

Thanks to well-maintained, gently paved trails, photography enthusiasts will find endless inspiration at Oirase, while trekking beginners can comfortably tackle the full 5-hour hike.

Lake Towada

After completing your walk along the Oirase Mountain Stream, you will arrive at another iconic destination: Lake Towada.

Straddling the border of Aomori and Akita Prefectures, this expansive lake boasts remarkably clear waters with visibility reaching up to 10 meters deep. Boarding a sightseeing cruise across its pristine surface offers a truly unforgettable experience.

How to Access the Oirase Gorge Hiking Trail

Direct bus routes connect major stations in Aomori straight to the Yakeyama trailhead.

If you prefer a more leisure-focused trip, local JR buses also stop directly at key scenic highlights along the route—including Ishigado, Kumoi Falls, and Choshi Great Falls—making exploring the gorge exceptionally easy and convenient.

Bear Sightings in Oirase: Hiking Precautions

While you don't need to panic, hikers at Oirase Gorge should take proactive precautions, as the lush trail sits in active Asiatic black bear habitat.

Because the rushing river and waterfalls easily drown out human noise, making your presence known is essential to avoid startling a bear. The basic precautions you should take are as follows:

- Always carry a bear bell on your pack and talk loudly or clap near roaring waters.

- Plan your walk during the middle of the day, avoiding dawn and dusk when bears are most active, and keep all food sealed while packing out every piece of trash to prevent attracting wildlife.

- Hike with others: Groups make more noise and look larger, making bear encounters significantly less likely.

If you spot a bear in the distance, stop and slowly back away without turning your back or running. Should a close encounter occur, stay calm, avoid eye contact, and use your backpack to shield your vital organs if necessary, remembering to never approach a bear cub.

Oirase Mountain Stream
Address: Oirase, Towada City, Aomori Prefecture
Access: Take a JR Bus from Aomori Station, Shin-Aomori Station, or Hachinohe Station and get off at Yakeyama
Website: http://towadako.or.jp/sansaku-map/oirase-nenokuchi/

*This article was edited based on content provided by GO JAPAN