I will post the photos and location as a preservation of the site.
Signboard Description
Onidake Volcano Tear Production Area
Volcanic tears are glassy volcanic ejecta, which are water droplets of low-viscosity magma ejected into the air, and are less than 4 mm in size.
The Onidake Volcano Group is a group of volcanoes that consists of Onidake and Hidake, and Jodake, Usudake, and Minodake on a gently sloping lava plateau, and retains its original volcanic topography well. Onidake is a 317-meter-high mortar volcano (homate) located south of Fukue City, and is a relatively new volcano with an old crater 500 meters in diameter.
These volcanoes once ejected large amounts of volcanic ash, sand, and gravel. Among these volcanic ejecta, volcanic tears are particularly rare, and together with the Onidake volcano group, are valuable geological materials.
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