Onioshidashi Park
The exposed lava rocks bear witness to the immense power of Mt. Asama’s eruption in 1783.
It is considered one of the world’s most spectacular scenic sites and is one of the most iconic attractions on the Asama Highland.
The rugged volcanic landscape, shaped by lava flows, offers a striking reminder of the grandeur and power of nature.
Visitors can enjoy breathtaking scenery in a peaceful and tranquil atmosphere.
Operating Period：Open year-round
Opening Hours：8:00A.M.–5:00P.M. (Last admission: 4:30P.M.)
*Operating periods and hours may change, or operations may be suspended depending on the season and weather conditions. Please check before your visit.
Observation Restaurant (2nd Floor)
Weekdays: 10:00A.M.–3:00P.M. (L.O. 2:30P.M.)
Weekends & Holidays: 10:00A.M.–4:00P.M. (L.O.3:30P.M.)
*Please note that only café service is available from 10:00A.M. to 11:00A.M.
*Please check the website for pricing details.
Free Parking (750 passenger cars / 35 buses)
Free Wheelchair and Stroller Rental
*Please inquire at the admission ticket counter. *Availability is limited.
Access
By Car
Approximately 45 minutes (30 km) from Usui-Karuizawa IC via Naka-Karuizawa and the Onioshi Highway.
Approximately 50 minutes (35 km) from Komoro IC via Naka-Karuizawa and the Onioshi Highway.
By Train
Approximately 40 minutes by bus from Karuizawa Station on the Hokuriku Shinkansen.
Approximately 30 minutes by bus from Naka-Karuizawa Station on the Shinano Railway.
Address: 1053 Kanbara, Tsumagoi Village, Agatsuma District, Gunma 377-1593
TEL: 0279-86-4141