The pyramids

Pyramid of Menkaure in Giza. . Illustration: depositphotos.com

Hidden spaces discovered in the Menkaure pyramid in Giza: Researchers reveal two mysterious chambers

New geophysical scans by the ScanPyramids project have identified two air-filled spaces behind the polished eastern facade of the Great Pyramid of Menkaure, providing strong evidence for the possible existence of a second entrance to the ancient structure at Giza.
The water course of the ancient Akramat branch is bordered by a large number of pyramids from the Old Kingdom period to the Second Intermediate Period, which extends between the Third Dynasty and the Thirteenth Dynasty. Credit: Eman Ghoneim

Archaeology: The Egyptian pyramids were built along the forgotten branch of the Nile - Akramat

These findings can explain why the pyramids are concentrated in what is now a narrow and hostile strip of desert
The pyramids at Giza in Egypt. Illustration: depositphotos.com

An unknown hidden chamber has been discovered in the Great Egyptian Pyramid of Giza

Already in 2016, the measurements gave reason to assume the existence of a hidden space near the chevron stones above the entrance. Now scientists from the Technical University of Munich (TUM) have used ultrasound endoscopy to make a contribution
The pyramids at Giza. From Wikipedia

The pyramid effect