Something I found on Google Earth:

Usually, if none of the informational layers in GE has something, you can find a nearby picture in the Panoramio layer that will give you a clue, but there’s nothing nearby. A Street View camera on a nearby highway caught it, though, so I knew what sort of thing it had to be.

Not that I really had to work that hard. Opening the area in Google Maps revealed a clear label on a nearby building, for anyone who can read Japanese…

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