Kaiyo, Tokushima

The Asa Coast Railway runs through Kaiyo-cho along the Pacific shoreline, and at Shishikui the train — or rather, the vehicle that becomes a train — crosses from road to rail. This is where the Asa Kaigan Railway began operating its DMV, a dual-mode vehicle that shifts between road and track, the first such service in the world. The town itself sits where the Kaifu River meets the ocean, the river running down from the Kaibe mountains to the north, carrying the weight of heavy rainfall and the memory of typhoons.

The coast here has its own geological record. The fossilized ripple marks at Shishikui-ura are pressed into the rock like a slow archive of ancient water. Inland, the mountains hold Suzugamine, where Yakkosou — a parasitic plant — grows in a designated natural habitat. The Hahakawa river sustains a population of giant eels. These are not spectacles arranged for visitors; they are simply part of the landscape's particular biology.

Kaiyo-cho was a port town from ancient times, a stop recorded in the Tosa Nikki, its prosperity built on maritime trade and timber. The Daisato Kofun, the largest horizontal stone-chamber burial mound in the southern part of the prefecture, and the Shiba site with its third-century pottery mark the depth of that history. Shishikui Onsen, drawing sodium bicarbonate water from deep underground at a cool spring temperature, sits near the Oote coast, where surfers read the Pacific swell. The roadside station beside the onsen anchors a stretch of Route 55 that still feels more working coast than resort.