A Gorge Shaped by Mountain Waters
Located within Tsurugi Quasi-National Park, Ichiu Gorge is fed by streams originating near Marusasa Mountain, which rises to 1,711.9 meters. The rugged terrain, clear flowing water, and forested slopes create a landscape that changes beautifully with the seasons. Nearby natural attractions include the striking rock formations of Dokama Gorge and the cascading waters of Narutaki Waterfall.
Spring brings colorful azaleas to the surrounding hillsides, while autumn transforms the gorge into a vibrant display of red, orange, and yellow foliage. Visitors can enjoy the contrast between the changing leaves, dark rock faces, and sparkling water throughout the scenic area.
Highlights of Ichiu Gorge
Dokama Gorge
One of the area’s most distinctive sights is Dokama Gorge, where the flowing water has shaped the rocks into enormous, cauldron-like formations. The water rushes through the narrow stone channels, creating a dramatic spectacle that reveals the power of nature over time. The unusual rock shapes and turbulent currents make this a particularly memorable stop for photographers and nature enthusiasts.
Narutaki Waterfall
Narutaki Waterfall is another highlight along the river. Although it is not especially tall, its clear water cascading into the gorge creates a peaceful scene that blends harmoniously with the surrounding forest. The soothing sound of the falling water adds to the tranquil atmosphere, making it an inviting place to pause and appreciate the natural surroundings.
Getting to Ichiu Gorge
From JR Sadamitsu Station, take a Shikoku Kotsu bus bound for Tsuzura. The journey takes approximately 45 minutes to Yaomote Bridge bus stop, from which the gorge is just a short walk away. Visitors should check current bus timetables before traveling, as services in this mountainous region may be limited.
Marusasa Mountain: Hiking Through Seasonal Mountain Scenery
A mountain of sweeping bamboo grasslands, rich forests, and panoramic views
Marusasa Mountain stands at 1,711.9 meters on the borders of Miyoshi City, Mima City, and Tsurugi Town in Tokushima Prefecture. Recognized as one of Japan’s 100 Famous Flower Mountains and one of the Shikoku 100 Famous Mountains, it is a popular destination for hikers seeking beautiful scenery and a rewarding mountain experience.
Mountain Landscapes and Open Grasslands
Located approximately 2.5 kilometers north of Mount Tsurugi, Marusasa Mountain is known for its gently rounded profile. Near the summit, broad expanses of bamboo grass cover the slopes, swaying in the wind to create a distinctive mountain landscape. The area forms part of Tsurugi Quasi-National Park and offers opportunities to enjoy the outdoors beyond hiking, including birdwatching and camping.
A Rich Variety of Wildlife
The mountain’s forests contain a variety of trees, including Japanese beech, Japanese oak, and fir. These woodlands provide habitats for birds throughout the year. In spring, visitors may hear the songs of Japanese bush warblers and blue-and-white flycatchers, while summer brings birds such as lesser cuckoos and Japanese robins. The changing sounds and colors of the forest add another dimension to a visit in any season.
Hiking Routes
Mefuike Pond Route
The main approach follows a promenade-style trail from Mefuike Pond. The hike takes approximately one hour and is relatively gentle compared with more demanding mountain routes, making it a suitable option for beginners who want to experience the mountain’s scenery without undertaking a long trek.
Traverse Route from Akaboshiyama
More experienced hikers can follow a traverse route from Akaboshiyama. Starting from the campsite at Omori Pond in the former Koyadaira Village area, the journey takes approximately three hours. This route requires greater hiking experience but offers a more substantial mountain adventure and a rewarding sense of accomplishment.
History and Cultural Significance
Marusasa Mountain has long been familiar to people living in the surrounding region. The late-Edo-period work Toka Roku contains a reference to a pond at Marusasa, providing a glimpse into the area’s historical landscape. During the Meiji and Taisho periods, the mountain was also known by the name Marushinoyama.
Forest Conservation and the Mountain Museum
In 1967, national forest land that included Marusasa Mountain was designated as a prefectural forest recreation area, supporting the conservation of its natural environment. In 1969, a museum was built near Mefuike Pond on the mountain’s western mid-slopes. Its exhibits feature plants, animals, and minerals from the surrounding area. A campground is also located nearby, allowing visitors to combine a mountain excursion with an overnight outdoor stay.
Sadamitsu River: Clear Waters and a Rich Local History
A mountain river shaped by nature, traditional industries, and local culture
The Sadamitsu River is a Class A river in the Yoshino River water system in Tokushima Prefecture. It is also known by the name Yuma River. The river has historical ties to the ancient Inbe people, who are said to have used its water in textile production. Its story therefore extends beyond its natural beauty to include the traditional industries and culture of the region.
The River’s Course
The Sadamitsu River rises around Marusasa Mountain, flows through the areas formerly known as Ichiu Village and Sadamitsu Town, and eventually joins the Yoshino River. Its clear waters and mountain setting have made it a popular destination for fishing enthusiasts, particularly those hoping to catch amago trout and ayu sweetfish.
Natural Attractions Along the River
The river corridor features several notable natural landmarks, including Dokama Gorge and Narutaki Waterfall. Ichiu Gorge, one of the most scenic sections of the river, draws visitors with its rugged rock formations, flowing water, and seasonal foliage. Together, these sights make the Sadamitsu River area an appealing destination for travelers interested in exploring the quieter, mountainous side of Tokushima Prefecture.
From Timber Transport to Hydroelectric Power
In the past, the Sadamitsu River was used to transport timber downstream. This role gradually came to an end after a district road opened in the mid-Meiji period, providing an alternative means of transportation. The river later became important for electricity generation. The Kira Power Station was built in 1925, followed by the Kirikoshi Power Station in Ichiu Village in 1931. These developments made the river an important part of the region’s modern infrastructure.
Tributaries and the Surrounding Landscape
The Sadamitsu River is joined by several tributaries, including Hojo-dani River, Hirai-dani River, and Narutaki-dani River. These smaller waterways contribute to the area’s rich natural environment and sustain the forests and mountain communities along their banks. The surrounding region continues to attract visitors for its scenic landscapes, fishing opportunities, and peaceful rural atmosphere.
Discover the Natural Beauty of Tsurugi Town
Ichiu Gorge, Marusasa Mountain, and the Sadamitsu River together showcase the remarkable natural diversity of Tsurugi Town and the wider Mima District. From dramatic rock formations and cascading waterfalls to mountain forests and open bamboo grasslands, the area offers scenery that changes with every season. Whether you prefer a leisurely walk beside a clear stream or a more challenging mountain hike, this part of Tokushima rewards visitors with beautiful landscapes, local history, and a welcome sense of tranquility.