A warning was announced at 11:00 am at Feb 28 for the area (1km) around the Mt. Ioyama crater. The trailhead near Mt. Ioyama towards Mt. Karakunidake is closed. The Ikemeguri (Three Volcanic Lakes) trail entrance beside Lake Fudoike is also closed. Climbers may approach Mt. Karakunidake from the Lake Onaminoike trail head. The Ikemeguri trail may be approached from the trail entrance at the Ebino Eco Museum Center, accessing Lake Byakushiike, Mt. Shiratoriyama and until Lake Rokkannonmiike. The trail is, however, closed between Lake Rokkanonmiike and Lake Fudoike. Thus, Mt. Koshikidake cannot be approached from the entrance near Lake Fudoike, only from the trailhead near Shiratori Onsen.