A YAMAP activity log published on November 11, 2026 records a 13.2 km hike in the Adatara mountain area. The route began near the Adatara Kogen parking area, passed Yakushidake, Mount Adatara, Yahazumori, Tetsuzan and Kagoyama, then returned to the Okudake trailhead area.
The recorded outing ran from 07:34 to 12:18: 4 hours 44 minutes, including 10 minutes of breaks. The log lists 965 m of ascent and 967 m of descent. Its course rating is 25, marked “strenuous,” with a listed standard time of 6 hours 34 minutes.
The hiker reported strong winds and noted that other hikers were out despite it being a weekday. They also raised the question of whether the route could be done without crampons; the log does not establish that crampons are unnecessary. After the hike, they said they took their time at the hot spring. The activity date is not stated in the supplied text, so the publication date should not be read as the date of the hike.
Source: yamap.com (originally published 2026-11-11 21:11 UTC+8)
