Overview
- Researchers from Cairo University and the Technical University of Munich used georadar, ultrasound, and electrical resistivity tomography to probe the area without damaging the structure.
- The anomalies lie directly behind a roughly 13‑foot‑high by 20‑foot‑wide zone of unusually polished granite on the eastern face that visually resembles the known northern entrance area.
- Measurements indicate one void begins about 1.35 meters behind the façade and is approximately 1.5 by 1.0 meters, while a smaller void starts around 1.13 meters back and measures about 0.9 by 0.7 meters.
- The peer‑reviewed study in NDT & E International reports that the results are consistent with a possible second entrance but do not confirm its existence or the full extent of the cavities.
- Authors and outside commentators note the methods’ limited penetration depth and call for Egyptological review, with Egypt’s Ministry of Antiquities saying drones and fiber‑optic cameras will be used in the coming months.