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Onioshidashi Volcanic Park: A Landscape Forged by Fire

Explore a dramatic volcanic landscape in Joshin'etsukogen National Park, shaped by the eruption of Mount Asama in 1783.

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Witness the raw power of nature at Onioshidashi Volcanic Park, a surreal landscape formed by the 1783 eruption of Mount Asama. Explore jagged lava formations, discover resilient alpine plants, and pay respects at a temple dedicated to those who perished in the disaster.

A brief summary to Onioshidashi Volcanic Park in Joshin'etsukogen National Park

  • Monday 8 am-5 pm
  • Tuesday 8 am-5 pm
  • Wednesday 8 am-5 pm
  • Thursday 8 am-5 pm
  • Friday 8 am-5 pm
  • Saturday 8 am-5 pm
  • Sunday 8 am-5 pm

Local tips

  • Wear sturdy shoes as the terrain can be uneven due to the volcanic rock formations.
  • Bring a camera to capture the unique landscape and the views of Mount Asama.
  • Check the weather forecast before visiting, as the park's high elevation can lead to rapidly changing conditions.
  • Visit during spring or autumn to see the alpine plants in bloom or the vibrant fall foliage.
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Getting There

  • Bus

    From Karuizawa Station, take the Seibu Kanko Bus to 'Onioshidashien'. The journey takes approximately 35 minutes and costs around ¥1230. Buses depart almost hourly. From Manza-Kazawaguchi Station, buses are also available.

  • Car

    Onioshidashi Volcanic Park is accessible via the Joshinetsu Expressway. Exit at the Usui-Karuizawa IC and follow the Onioshi Highway for approximately 45 minutes. There is a toll of ¥350 for the Onioshi Highway. Ample parking is available at the park (750 spaces).

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Discover more about Onioshidashi Volcanic Park in Joshin'etsukogen National Park

Onioshidashi Volcanic Park, located in Joshin'etsukogen National Park, offers a stark and stunning reminder of the power of volcanic activity. The park's unique landscape was created during the massive eruption of Mount Asama in 1783, which blanketed the area in lava and volcanic rock. The name 'Onioshidashi' translates to 'pushing the demon out,' a testament to the eruption's intensity. Today, visitors can walk among the solidified lava flows, marveling at the bizarre rock formations shaped by centuries of weathering. Marked trails wind through the park, offering panoramic views of Mount Asama and the surrounding landscape. The park is also home to a surprising variety of alpine plants that have adapted to the harsh volcanic environment. At the heart of the park stands Asamayama Kannondo Temple, a branch of Kaneiji Temple in Tokyo, built in 1958 to commemorate the victims of the 1783 eruption. Visitors can pay their respects and enjoy the serene atmosphere of the temple grounds. On clear days, the park offers stunning views of the Northern Alps, the Tanigawa mountain range, and Mount Nantai.

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