Nagatoro Iwadatami Riverside Walk

The Iwadatami riverside walk follows the Arakawa River gorge in Nagatoro, Chichibu district, Saitama Prefecture, starting about a three-minute walk from Nagatoro Station on the Chichibu Railway. No permit is required. The path covers approximately 2.5km along a flat riverside walkway with negligible elevation change, taking most visitors about one to one-and-a-half hours to walk at an easy pace. The route runs alongside the Iwadatami rock terraces, a striking formation of layered sedimentary rock exposed along the riverbank and designated a national Place of Scenic Beauty and Natural Monument, where the flat, book-like rock strata stretch for hundreds of metres beside the water. The walking surface is a mix of paved promenade and natural rock shelf close to the water's edge, and rocks near the river can be slippery when wet, particularly after rain. Shade is intermittent, provided by riverside trees rather than continuous forest cover, so the walk feels open for much of its length. The path passes near the boarding point for Nagatoro's traditional line-boat rafting trips down the Arakawa rapids, and several tea houses and rest stops along the route serve local specialties, including the region's noted shaved ice and grilled sweetfish in summer. Autumn brings some of the most popular scenery in the area, when maple trees along the gorge turn red and orange above the pale rock terraces, drawing large weekend crowds. Because the walk is flat and short, it suits visitors of all ages and is often combined with a river cruise or a visit to nearby Hodosan for a fuller day in Nagatoro.