the started on december 16, 1707 (23rd day of the 11th month of the year hōei 4) and ended about january 1, 1708 (9th day of the 12th month of the year hōei 4) during the edo period. there was no lava flow, but the hoei eruption released at least 800 million cubic meters of volcanic ash. this ash spread over very large areas around the volcano. it even reached edo almost 100 km away. cinders and ash fell like rain in izu, kai, sagami, and musashi provinces. this eruption of mount fuji might have been caused by the 1707 hōei earthquake