
Guide
Oboke and Koboke are dynamic canyon areas located in Miyoshi City, Tokushima Prefecture, shaped by the powerful flow of the Yoshino River. The landscape is characterized by steep cliffs and unique, jagged rock formations, offering a breathtaking view of the sculptural beauty created by nature over millennia. The main attractions include sightseeing boat cruises that drift along the river, as well as high-energy water activities such as rafting and canoeing. Visitors from both Japan and abroad come here to feel the raw energy of the natural world up close.
This region has long been known as a rugged mountainous area. There are various theories regarding the origin of the name, which once referred to the difficult mountain passes connecting Awa Province to Tosa Province. Since the modern era, the area has been developed into a major tourist destination with the establishment of roads and railways along the riverbanks. During the Meiji era, the sightseeing boat industry began as part of early tourism development, and the tradition of enjoying the area's natural environment through organized tours has evolved over many years.

The greatest charm lies in the striking contrast between the clear waters of the Yoshino River and the towering cliffs that surround it. From the perspective of the water's surface, you can observe the intricate shapes of the rocks and stone formations sculpted by nature. Additionally, there are nearby facilities that display natural formations and minerals, allowing you to learn about the geological origins and the richness of the local environment. It is a place where you can experience both the serenity and the dynamic movement of the river.
The river's flow and the surrounding scenery change beautifully depending on the season. The periods with abundant water-flow are particularly ideal for active experiences like rafting and canoeing. Because the sunlight changes the color of the rock faces and the sparkle of the water throughout the day, we recommend visiting during bright daylight hours to fully enjoy the spectacular views.

Oboke and Koboke offer a wide range of water-based experiences. For a relaxing time, the sightseeing boat cruise allows you to drift peacefully while taking in the scenery. For those seeking more excitement, professional rafting and canoeing tours are available. These activities provide a precious opportunity to feel a sense of unity with nature as you directly experience the river's current.
The surrounding area features several facilities where you can deepen your knowledge of local nature and geology. Along the national highway, you can find museums displaying rocks and minerals, making them a perfect stop before or after your river cruise. The entire region is surrounded by lush natural environments, making it an ideal place for walking and sightseeing.

Preparation is key depending on your chosen activity. If you are participating in water sports like rafting or canoeing, please wear clothes that can get wet and comfortable, easy-to-move-in attire. As some local operators may only accept cash, it is helpful to carry Japanese Yen (cash) to ensure smooth transactions. Please respect the natural environment and follow local etiquette to preserve this beautiful landscape.