Mt. Donden

Although its formal name is Tadara Peak, people call the round mountain at the highest point of the highland that consists of the three mountains of the Osado Range “Mt. Donden” (“Blunt Ridge”). As its name suggests, it is the only mountainous area with a gentle, rounded shape in the otherwise steep Osado Mountain Range. The highland, where free-range cattle sometimes can be seen on the parking lot, is abundant high-altitude plants and grasses. It is numbered among the New 100 Most Famous Mountains in Japan and the 100 Best Flower Mountains in Japan. The most popular season for visitors is spring to early summer, when trekkers flock here to see unusual varieties of rhododendron brachycarpum, Japanese azaleas, and Menziesia multiflora.