


Hikawa Keikoku is a compact mountain gorge with clear emerald river pools, cascades and mossy rock formations framed by maples and cedars—spectacular in autumn and after rain. Best at early morning or late afternoon for soft sidelighting; visit October–November for peak color. Accessible by train to Okutama and a short walk; free entry and limited parking at trailheads. Respect quiet, no drones in protected areas.



Hikawa Keikoku is a compact mountain gorge with clear emerald river pools, cascades and mossy rock formations framed by maples and cedars—spectacular in autumn and after rain. Best at early morning or late afternoon for soft sidelighting; visit October–November for peak color. Accessible by train to Okutama and a short walk; free entry and limited parking at trailheads. Respect quiet, no drones in protected areas.