Now, a study from Japanese and Egyptian researchers reveals the discovery of an L-shaped structure along with an accompanying anomaly right next to the Great Pyramids of Giza. And GPR has once again delivered near one of the most well-excavated sites in the world—the Great Pyramids of Giza. “In the initial survey by GPR and ERT we found an anomaly in the north of the survey site. “It may have been an entrance to the deeper structure,” Sato and his colleagues wrote in the paper. From the survey results, we cannot determine the material causing the anomaly, but it may be a large subsurface archaeological structure.”