Jogasaki Coast Nature Study Trail

The Jogasaki Coast Nature Study Trail runs along the volcanic clifftops of Jogasaki Kaigan in Ito City on the eastern Izu Peninsula, Shizuoka. The main trailhead sits a short walk from Jogasaki-kaigan Station on the Izu Kyuko Line, with the route's southern end reachable from Izu-Kogen Station; both stations bookend the coastal path so hikers can walk one way and return by train. The full traverse covers about 9km between the shorter Picnical Course (roughly 3km) and the longer Nature Study Course, extending to 10.6km with connector paths, and takes 3.5-4 hours end to end, or about 1.5 hours for the shorter loop near Jogasaki-kaigan Station. The terrain rolls gently along basalt sea cliffs formed by lava flows from the Omuroyama eruption, with cumulative elevation change around 440m but no single steep climb; the path alternates between forested sections and open, wind-exposed clifftop stretches with little shade. Surfaces are mostly packed dirt and rock steps, occasionally narrow near the cliff edge. The signature landmark is the Kadowaki Suspension Bridge, a footbridge crossing a narrow inlet with views down to the surf breaking on volcanic rock; the Jogasaki Lighthouse and several rocky coves also mark the route. Hikers short on time can turn around at the suspension bridge for a roughly 2-hour round trip from Jogasaki-kaigan Station, which captures the trail's best scenery without the full traverse. There are no mountain huts or reliable water sources along the clifftop sections; a handful of cafes and rest facilities cluster near the Jogasaki-kaigan Station trailhead and around the Izu-Kogen end, so hikers should carry enough water for the exposed middle stretch.