Yoshino River Whitewater Rafting — Koboke Gorge

The Yoshino River Whitewater Rafting tour through Koboke Gorge is a half-day white-water rafting trip on one of Japan's three great gorges, running through the granite-walled Koboke and Oboke sections of the Yoshino River in Miyoshi, Tokushima. The half-day course covers roughly 2.5 to 3 hours on the water, including Class II-III rapids interspersed with calmer stretches suitable for swimming and cliff-jumping in summer. No prior rafting experience is required, though participants should be comfortable in moving water and able to swim; most operators set a minimum age of around 10 for the half-day course and may impose upper age or health restrictions for guests with heart conditions or mobility limitations. All essential safety equipment is included in the price: wetsuit, helmet, personal flotation device, and river shoes, along with a raft, paddle, and a certified guide who steers and calls commands from the stern. Participants should bring swimwear to wear under the wetsuit, a towel, and a change of clothes for after the trip; GoPro-style cameras can usually be mounted on helmets, though policies vary by operator. Happy Raft, based near Koboke Station, is one of the longest-running rafting operators on the Yoshino River and trains its guides in swift-water rescue and first aid, with a mandatory safety briefing covering paddle commands, what to do if thrown from the raft, and the throw-rope rescue procedure before launching. The river's flow is partly regulated by an upstream dam, so water levels and rapid intensity can vary by season and by scheduled releases; the operating season runs from April through October, with the warmest and most popular months being July and August, when the calm pools are also used for swimming breaks. Cold weather in early spring and late autumn tours calls for extra layers under the wetsuit, and operators may cancel or modify the course during flood-level water following heavy rain.