Naquadah-sensing device is a Eldeoran device Eldeorans use at various excavations in the ancient ruins and other sites. When archaeologists made ​​excavations of Lornuan ruins ,they used them to examine some underground chamber that was filled by Goa'uld that abandoned the planet. The devices could not scan the ridges. (RPG: "First Steps: The Stargate Unexplored Worlds Roleplaying Sourcebook")

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