The starting point of the Shimanto River

Its headwaters, is nestled deep within the Shikoku Mountains in Tsuno Town, Takaoka District, Kochi Prefecture, near the 1,200-meter elevation of Mt. Irazu (Irazuyama, meaning "mountain where one does not enter" or "forbidden mountain," suggesting its remote and untouched nature). This is the source of the Shimanto River, often praised as Japan's last clear stream.

From this secluded spot within a dense primeval forest, crystal-clear water springs forth and flows down moss-covered rocks, a scene that truly evokes the very origin of the Shimanto River's life.

The area surrounding the headwaters is blanketed by untouched primeval forest, offering stunningly beautiful scenery throughout the four seasons. Listening to the chirping of wild birds and the rustling of leaves in the trees will surely refresh both your mind and body. Enveloped in silence, the headwaters possess a mystical atmosphere, like stepping into another world, allowing you to spend peaceful moments while feeling the profound grandeur of nature.

A well-maintained hiking trail leads to the headwaters, making it possible to enjoy a hike while fully appreciating the magnificent natural surroundings. The area around the headwaters is also home to a diverse array of flora and fauna, providing opportunities for nature observation and encountering a rich ecosystem. The picturesque scenery is ideal for photography, and capturing a memorable shot is highly recommended.

By making a reservation in advance, a local guide can accompany you, ensuring a worry-free experience even for first-time visitors. You can also learn interesting local tidbits and ways to enjoy the area that only locals know. (Please note that the guide service is subject to a fee.)