Microgravity can determine architectural remains, caves, voids, crypts and buried thumbs.
Quad Geometrics

Gravity methods have been tried in archaeology since 1955 (El-Qady et al., 2019). Gravity signatures are typically close to the instrumental noise threshold. High accuracy requirements in calculating terrain corrections have significantly dampened the interest in using the method. Gravity has potential to determine some architectural remains, filled caverns, caves and voids, crypts, buried thumbs.

The Great Cheops Pyramid in Egypt was investigated to explore the existence of more chambers (Lakshmanan, and Montlucon, 1987).