A Waterfall Shaped by Mount Fuji’s Eruptions — Discover the Geological Story of Ayutsubo Falls in the Izu Peninsula UNESCO Global Geopark

A Surprising Natural Wonder Hidden Near a Residential Area

Located in Nagaizumi Town, Shizuoka Prefecture, Ayutsubo Falls is a scenic waterfall on the Kise River and one of the geosites that make up the Izu Peninsula UNESCO Global Geopark.

The waterfall was formed by the Mishima Lava Flow, which flowed from Mount Fuji approximately 10,000 years ago. Over thousands of years, the river gradually eroded the surrounding landscape, carving out the dramatic waterfall seen today.

Measuring approximately 9 meters in height and 65 meters in width, Ayutsubo Falls offers an impressive natural spectacle despite being located close to residential neighborhoods and urban areas. Designated as a Natural Monument of Shizuoka Prefecture, it has long been recognized as one of Nagaizumi Town’s most significant natural attractions.

The surrounding area has been developed into a public park, allowing visitors to enjoy a relaxing walk while experiencing the geological history of the region firsthand.

Experience the Power of Mount Fuji’s Landscape

1. A Dramatic Waterfall Created by Ancient Lava Flows

The greatest attraction of Ayutsubo Falls lies in its geological origins.

The bedrock that forms the waterfall was created by the Mishima Lava Flow that erupted from Mount Fuji around 10,000 years ago. As the Kise River continued eroding the softer layers beneath the lava, only the harder volcanic rock remained, eventually forming the waterfall.

Visitors can still observe layers of volcanic lava exposed along the cliff face, providing a rare opportunity to witness the powerful forces that shaped the landscape.

More than simply a scenic waterfall, Ayutsubo Falls serves as an open-air classroom where visitors can learn about the geological history of the region.

2. Spectacular Views of the Waterfall and Mount Fuji from the Suspension Bridge

Downstream from the falls stands a suspension bridge known as Ayutsubo no Kakehashi.

From the bridge, visitors can enjoy panoramic views of the waterfall, and on clear days, Mount Fuji can also be seen in the distance. This beautiful combination of cascading water and Japan’s most iconic mountain explains why Ayutsubo Falls is sometimes referred to as the “Waterfall with a View of Fuji.”

The striking scenery makes it a popular destination for photographers and nature lovers alike.

3. Experience the Izu Peninsula UNESCO Global Geopark

Ayutsubo Falls is one of the official geosites within the Izu Peninsula UNESCO Global Geopark.

Nagaizumi Town is one of the municipalities that make up the geopark, and several other geosites can also be found throughout the town.

Among them are Tsurube Otoshi Falls, sometimes called the “phantom waterfall” because it disappears during dry periods, as well as Yoroigafuchi and Ushigafuchi, locations where distinctive lava-formed landscapes created by Mount Fuji can still be observed.

Ayutsubo Falls serves as an ideal introduction to the geological story of Nagaizumi and the wider Izu Peninsula Geopark.

4. Enjoy the Newly Developed Ayutsubo Park

The area surrounding the waterfall has been developed as Ayutsubo Park, creating an enjoyable destination for visitors of all ages.

The park features open grassy areas, observation decks, large playground equipment for children, and a rest facility known as Ayutsubo Terrace.

Visitors can also explore nearby attractions, including views of Ayutsubo Falls itself and the intake weir of Honjuku Irrigation Canal, which has been recognized as a World Heritage Irrigation Structure.

The combination of nature, history, and family-friendly facilities makes the area an appealing destination for a wide range of travelers.

Following the Geological Memory Left by Mount Fuji

Ayutsubo Falls is much more than a beautiful waterfall.

It is a place where visitors can witness the landscapes created by Mount Fuji’s volcanic activity and experience the immense forces of nature that have shaped the region over thousands of years.

Despite its convenient location near residential neighborhoods, the site offers a rare opportunity to encounter a landscape formed by geological events dating back approximately 10,000 years.

If you are visiting Nagaizumi Town, be sure to stop at Ayutsubo Falls and discover the fascinating story of the land told through the Izu Peninsula UNESCO Global Geopark.

Visitor Information

Name: Ayutsubo Falls

Location: Shimotogari, Nagaizumi Town, Sunto District, Shizuoka Prefecture

Access:

• Approximately 5 minutes on foot from Shimotogari Station on the JR Gotemba Line

• Approximately 30 minutes by car from Numazu IC on the Tomei Expressway

Parking: Available (Ayutsubo Park Parking Area)

Related Facility: Ayutsubo Park https://www.town.nagaizumi.lg.jp/soshiki/kouji/park/5143.html

Official Geosite Information: https://izugeopark.org/geosites/ayutsubo/

Please note that some walking paths and areas around the waterfall may be slippery. Comfortable walking shoes are recommended.