Secret passage possibly found in Pyramid of Menkaure at Giza

Researchers from Cairo University and the Technical University of Munich (TUM) have discovered two air-filled voids within the Pyramid of Menkaure, indicating a potential hidden entrance. These results were detailed in NDT & E International. Constructed for Pharaoh Menkaure during the 26th century BCE, this pyramid, the smallest at Giza, has not been thoroughly investigated since partial excavations took place from 1906 to 1910. Unlike its larger counterparts, it features a partial red granite exterior. The team employed ground-penetrating radar, ultrasound, and electrical resistivity tomography as part of the ScanPyramids initiative, building on a 2019 theory proposed by Stijn van den Hoven. Christian Grosse from TUM noted that this approach enables accurate assessments without harming the pyramid.