On September 1st, the Japan Meteorological Agency lowered the eruption alert level for Mount Aso from "3" to "2". This means we can now access the Grislo operating route, and we will resume operations! We appreciate your continued patronage.

■ Notice of suspension of Grislo service At 3:45 PM on August 14, 2026, the Fukuoka Regional Meteorological Observatory issued a volcanic alert level for Mount Aso. The restriction level has been raised from "Level 2 (Restrictions around the crater)" to "Level 3 (Restrictions on entering the mountain)." Consequently, an area of approximately 2km from the first crater of Nakadake will be closed to the public. Visiting the Aso Nakadake crater and climbing Takadake, Nakadake, Kijimadake, and...