The ferrymen’s poles touch the walls as they row their boats. Walls that represent 200 million years of the Earth’s history.

Shomotsuiwa is where you can feel that history the most. A once-underwater geological stratum that, upon protruding from the water, was eroded over time by the current, thus giving birth to the Hozugawa River. The stratum itself was composed of plankton accumulated while under the sea, making it soft and easily eroded. That’s why you can see many interesting boulders shaped like frogs, lions and even Snoopy.