Aso volcano is at JMA Eruption Alert Level 2 (Crater Surrounding Warning). The area within approximately 1km from the crater is restricted and off-limits; however, access to the mountain-top plaza (山上広場) and the toll road is permitted during operating hours (currently 8:30 AM - 6:00 PM in summer season through October 31).
- Restricted radius: 1,000 m
- Crater shuttle bus: Operating
- Areas affected: Nakadake first crater, crater rim area
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 2 hours ago