The crater is under Level 2 eruption warning with a 1km restricted zone around Nakadake crater; access to the mountain plaza and crater-view road is permitted during operating hours (currently 8:30 AM–6:00 PM in autumn/winter season), but you cannot enter within 1km of the crater itself.
- Restricted radius: 1,000 m
- Crater shuttle bus: Operating
- Areas affected: Nakadake crater (中岳火口), Mountain plaza area (山上広場)
Traffic/Parking (schedule estimate, not live sensor data): No particular reason to expect crowding right now -- a weekday outside peak season and peak hours.
Official Aso regulation status ↗
· updated 33 minutes ago