Is there some reason that they can't tether the robot to a radio receiver that is outside the area where radio won't penetrate? That way, the humans would only need to go far enough to deploy the reciever and the robot, back out, and send the robot in deeper.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.