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A cone with ejecta above it.
Also known as: Volcano pictogram Japan
Marks an evacuation site as suitable for a volcanic eruption.
Marks a site designated as suitable for evacuation from a volcanic eruption.
Contexts: Public information
Covers several distinct phenomena the Japanese name groups together — ashfall, ballistic ejecta, pyroclastic flow and lahar — which need different distances and different shelter, so the mark is posted with a hazard map rather than on its own.
Contexts: Public information
A square panel carrying a broad flat-topped cone with fragments thrown up above it and falling to either side.
One of the eight marks in the set.