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sleepingbeautycan ago

You know those Ground Penetrating Radar things that can map what is underground? Can't we rent one of those suckers and do a complete circle around the locations (on public property) to see if there is in fact a tunnel? I can't see how mapping the underground of public domain areas would be illegal.

quantokitty ago

Have no idea. If it's on public property, maybe not. There is that group that formed to investigate tunnels. Have no idea what they're up to, but hope they take this on.