This massive boulder (top photo) was carried down the Biwasawa valley on the east side of Bandai volcano in a mudflow during an eruption in 1888. The mudflow deposit covers the broad floor of the Nagase valley. In addition to this mudflow, the 1888 eruption included a pyroclastic flow on the east side and catastrophic debris avalanche that swept over villages to the north of the volcano. The bottom photo is taken from the same location in 1988. The identical boulder now forms part of the landscaping of a house in the town of Inawashiro. Top photo by Fukushima Minposha Newspaper; bottom photo by Lee Siebert (Smithsonian Institution).