Multilingual AI audio guide exhibit on WOUDiO (PWA). WOUDiO pioneered the world’s first audio guide platform with built-in donation: listeners can support the cultural venue without leaving the listening experience. The text below is the localized description, details, and narration script for this audio guide stop.
Mount Norikura is an active volcano. That is the name for a volcano that has erupted within the past ten thousand years.
Its eruptions are written in the strata. By the Japan Meteorological Agency's count, there have been at least fourteen in the last ten thousand years, an average of one every seven to eight hundred years. Two were magmatic eruptions, and twelve were phreatic, steam-driven eruptions.
About 9,600 years ago, and again about 9,200 years ago, magmatic eruptions occurred at the crater of Kengamine. The eruption 9,200 years ago is thought to have thrown out ash and scoria and sent pyroclastic flows racing down.
The last eruption is thought to have been about five hundred years ago, a phreatic eruption near Kengamine. No document describing it has been found. There is no record of an eruption of Norikura in recorded history; geological survey read an eruption that was never written down out of the layers of the ground.
An eruption no one wrote down remains in the rock, layered, with a date.
Large ejected stones from a phreatic eruption are expected to reach about one kilometer from the crater. The Japan Meteorological Agency monitors this mountain around the clock.
A ridge that looks calm is also the ridge of a mountain whose eruptions can be counted. Beyond the span of time that can be counted, the mountain goes on.
