Sekiyama Otaki Falls is a beautiful waterfall located along National Route 48 in Higashine, Yamagata Prefecture. Situated in the upper reaches of the Midaregawa River, part of the Mogami River system, the waterfall plunges dramatically through a gorge filled with unusual rock formations and huge boulders.
The waterfall is approximately 10 meters high and 15 meters wide. Its powerful flow and the beautiful emerald-green water in the plunge pool below are among its most distinctive attractions.
Surrounded by lush nature, Sekiyama Otaki is a peaceful and relatively little-known sightseeing spot where visitors can enjoy the refreshing sound of rushing water and the cool atmosphere of the gorge.
One of the highlights of Sekiyama Otaki is the clear, emerald-green plunge pool beneath the waterfall.
The exceptionally clear water reflects the surrounding greenery, creating beautiful shades of green. The view from above is impressive, but visitors can also descend a set of stairs to get closer to the waterfall and experience the power of the rushing water from a different perspective.
Because the water is remarkably clear, iwana char, or Japanese char, can sometimes be seen in the river depending on the conditions. The pristine water offers a vivid reminder of the area’s natural environment.
Sekiyama Otaki can be appreciated from above, but descending toward the plunge pool reveals a much more intimate view of the waterfall.
To reach the falls, visitors follow a narrow staircase with a noticeable slope and then cross a red bridge. The bridge is an excellent viewpoint for seeing the waterfall from close range.
From the bridge, the water can be seen rushing between the rocks, surrounded by lush greenery, while the emerald-green plunge pool creates a striking contrast. Together, these elements form a dynamic natural landscape.
Summer is one of the pleasant seasons to visit Sekiyama Otaki. The gorge becomes surrounded by fresh green foliage, while sunlight reflects off the surface of the clear river.
The area around the waterfall also offers opportunities to enjoy playing in the river. The sound of the waterfall and the cool breeze moving through the gorge provide a refreshing escape from the summer heat.
Sekiyama Otaki displays a different character throughout the year. The scenery surrounding the waterfall changes with each season, offering a new experience depending on when you visit.
In spring, trees begin to sprout and the gorge is enveloped in vibrant fresh green foliage. The contrast between the young leaves and the clear flowing water creates a refreshing landscape that is ideal for a leisurely walk.
Summer brings the deepest shades of green to the surrounding forest. The emerald-green plunge pool contrasts beautifully with the dense foliage, while the cool river attracts visitors looking to enjoy the refreshing natural surroundings.
From mid-October to early November, the gorge is transformed by autumn foliage, with the trees turning vivid shades of red and yellow.
The waterfall framed by colorful leaves takes on a particularly beautiful appearance that is quite different from the fresh greenery of spring and summer.
During this season, be sure to look for the nearby “O-katsura,” a giant Japanese katsura tree. Designated as a natural monument by Yamagata Prefecture, this magnificent old tree is another highlight of the area’s natural scenery and can be enjoyed together with the autumn colors.
In winter, snow covers the surrounding landscape, transforming Sekiyama Otaki into a peaceful scene of white. The waterfall continues to flow through the snow, creating an atmosphere completely different from that of summer.
The waterfall can be viewed from a location approximately one minute on foot from the parking area, making it relatively easy to enjoy the winter scenery even when the surrounding landscape is covered in snow.
Sekiyama Otaki is located directly behind Otaki Drive-In Izumiya, a traditional roadside restaurant along National Route 48.
The drive-in retains a nostalgic atmosphere and is a convenient place to stop for a meal or purchase local souvenirs. Seats near the windows offer views of the waterfall, allowing visitors to enjoy a meal while listening to the sound of the rushing water.
The restaurant serves a variety of dishes and local favorites, including ayu sweetfish, iwana char, tamakonyaku, miso-grilled rice balls, and oden.
It is an ideal place to stop during a nature walk, take a break after visiting the waterfall, or enjoy a meal while looking out at the surrounding scenery.
Another natural attraction near Sekiyama Otaki is the O-katsura, a giant katsura tree designated as a natural monument by Yamagata Prefecture.
Its impressive size and the sense of age conveyed by the tree make it an excellent example of the area’s long-standing natural heritage.
Visiting the giant tree together with Sekiyama Otaki allows travelers to appreciate not only the dramatic waterfall but also the rich natural environment of the surrounding gorge.
Sekiyama Otaki is also illuminated at night, creating a magical atmosphere quite different from the daytime scenery.
The waterfall is beautifully lit from sunset until 8:30 p.m., highlighting the rushing water against the darkness. As the surrounding area grows darker, the illuminated waterfall becomes increasingly striking and takes on an almost mysterious appearance.
Around the nearby restaurant and facilities, indirect lighting is also used from sunset until 8:45 p.m., allowing visitors to enjoy the nighttime atmosphere of Sekiyama Otaki before or after a meal or rest.
Sekiyama Otaki Falls is a scenic natural attraction featuring a powerful waterfall approximately 10 meters high and 15 meters wide, together with a beautiful emerald-green plunge pool.
Visitors can admire the waterfall from the red bridge, enjoy the cool river environment in summer, see colorful autumn foliage, or experience the quiet beauty of the falls surrounded by snow in winter.
The nearby Otaki Drive-In Izumiya adds another dimension to the visit, serving local dishes such as ayu, iwana, tamakonyaku, and miso-grilled rice balls.
With its dramatic waterfall, crystal-clear water, seasonal scenery, local food, and nighttime illumination, Sekiyama Otaki offers an enjoyable combination of nature, relaxation, and local culture along the scenic Route 48.