"using a high-frequency ground penetrating radar, the ScanPyramids team found an opening in the joint behind the lower blocks of the chevrons, which made it pos

"using a high-frequency ground penetrating radar, the ScanPyramids team found an opening in the joint behind the lower blocks of the chevrons, which made it possible it to introduce a state-of-the-art endoscope with a diameter of only 5 mm."