There seems to be a yet-explored "big void" in the Pyramid of Gaza, found using "Muon tomography": https://en.wikipedia.org/wiki/ScanPyramids#ScanPyramids_Big_

There seems to be a yet-explored "big void" in the Pyramid of Gaza, found using "Muon tomography": https://en.wikipedia.org/wiki/ScanPyramids#ScanPyramids_Big_Void_(SP-BV) https://en.wikipedia.org/wiki/ScanPyramids#ScanPyramids_Big_... https://en.wikipedia.org/wiki/Muon_tomography https://en.wikipedia.org/wiki/Muon_tomography