Iya Valley Natural Park

Iya Valley Natural Park lies within Tokushima Prefecture on Japan’s island of Shikoku. The park is defined by deep valleys carved by the Iya River and encircled by rugged mountains, creating dramatic cliffs and serene mountain scenery. This remote area is one of Japan’s most isolated and unspoiled regions, preserving traditional thatched-roof farmhouses and pastoral villages. Ecologically, the park supports rich temperate forests with a variety of flora including cedar, cypress, and maple trees, which burst into vibrant colors in autumn. Wildlife here includes Asian black bears, serow, and numerous bird species. The valley’s history is deeply tied to mountain hermits and warlords, and its iconic vine bridges — known as kazurabashi — are historic footbridges built from interwoven vines, reflecting ancient engineering and cultural heritage. Visitors to Iya Valley Natural Park enjoy a range of outdoor activities such as hiking through forest trails and along river paths, boating on the river’s calm waters, and exploring the scenic mountain roads. Key landmarks include the Iya Kazurabashi Bridge, the Oboke and Koboke gorges with their dramatic rock formations, and the historic Ochiai Village known for its traditional architecture. The park offers a compelling escape for travelers seeking both natural beauty and a glimpse into rural Japanese culture, with ample opportunities for photography, mountain biking, and peaceful nature walks. The combination of breathtaking landscapes, cultural landmarks, and outdoor recreation makes Iya Valley an appealing destination throughout the year.