The crater area is under Level 2 Eruption Warning with a 1km restricted zone around Nakadake crater. Visitors cannot access the crater rim itself, but the Aso Park Road and mountain plaza area are open during seasonal operating hours (currently 8:30 AM–5:30 PM autumn schedule); shuttle bus service is operating to the mountain plaza.
- Restricted radius: 1,000 m
- Crater shuttle bus: Operating
- Areas affected: Nakadake crater, Crater rim area, Sansenrigahama
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 6 hours ago