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Global Volcanism Program | Image GVP-01425

This entire flat forested plain, known as Aokigahara ("Blue Tree Plain") is underlain by a single massive lava flow from Fuji. A major explosive and effusive eruption began in June 864 CE from Nagaoyama, a vent on the NW flank. Lava flowed into lakes Motosu and Senoumi, destroying lakeshore farm houses. It divided Lake Senoumi into the two present-day lakes of Shoji-ko (seen here in the distance against a Tertiary mountain range to the NW) and Sai-ko. The Aokigahara Marubi lava field covered an area of 32 km2. Photo by Lee Siebert, 1977 (Smithsonian Institution).

This entire flat forested plain, known as Aokigahara ("Blue Tree Plain") is underlain by a single massive lava flow from Fuji. A major explosive and effusive eruption began in June 864 CE from Nagaoyama, a vent on the NW flank. Lava flowed into lakes Motosu and Senoumi, destroying lakeshore farm houses. It divided Lake Senoumi into the two present-day lakes of Shoji-ko (seen here in the distance against a Tertiary mountain range to the NW) and Sai-ko. The Aokigahara Marubi lava field covered an area of 32 km2.

Photo by Lee Siebert, 1977 (Smithsonian Institution).

Keywords: lava flow


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