Use the

Planning a Trip to Japan?

Share your travel photos with us by hashtagging your images with #visitjapanjp

Mt. Asama (Gunma) 浅間山

kusatsu area kusatsu area
kusatsu area kusatsu area

Simmering underneath

The last eruption was in 2019, and Mt. Asama continues to puff away to let us know it is still alive. Bordering Gunma and Nagano prefectures, Mt. Asama is a 2,568-meter active volcano. There is a hiking trail up the volcano which can be picked up from the Asama-sansou, a mountain hut on the Nagano-side of Mt. Asama.

How to Get There

For Mt. Asama:

From Tokyo station , take the Hokuriku Shinkansen to Karuizawa station. Then change to the Shinano line and take a train toward Ueda. Get off at Komoro Station and take a bus to Asama-sansou.

For Onioshidashi Park:

Take the JR Agatsuma Line to Manza-Kazawaguchi Station and take the bus to the park (30 minutes).

Quick Facts

Mt. Asama is said to be the island of Honshu's most active volcano

The large eruption in 1783 was one of the most destructive eruptions in Japan in the past 1,000 years

Picture the eruption about 200 years ago

To get a real sense of the power of the 1783 eruption and subsequent lava flows, visit Onioshidashi Park. The volcanic rock formations have all come from that eruption, but they are in such a disorganized, random, and unattractive arrangement that locals thought the devil himself had pushed the rocks out. The name Onioshidashi means "rocks pushed by the devil."

* The information on this page may be subject to change due to COVID-19.

Recommended for You

Mt. Asama (Nagano)
Mt. Asama (Nagano)
kusatsu area

Please Choose Your Language

Browse the JNTO site in one of multiple languages