The Great Pyramid North Face Corridor : What do we know so far ? by Matthew Sibson (Ancient Architects)

An International Press Conference in front of the Great Pyramid of Egypt announced the discovery of a new pyramid passageway, 9 metres long, 2 metres wide and just over 2 metres tall, located behind the chevron blocks on the north face of the Great Pyramid. It is therefore referred to as the North Face Corridor, or NFC for short. The discovery has got everybody talking, everybody with an interest in the Great Pyramid has something to say and I’ll do separate videos on the various hypotheses in the coming weeks and months.

Matthew Sibson

Découverte d'un nouveau couloir dans la Grande Pyramide : un article de la revue Science Direct

Built over 4500 years ago, the Great Pyramid of Giza, Egypt, is the only remaining structure of the Wonders of the Ancient World as described by the ancient Greek historian Herodotus. Despite this long existence, only recently has modern science and technology been employed to study this massive stone structure. Cosmic-ray muon radiography throughout the ScanPyramids project has detected a large void above the Grand Gallery of the Great Pyramid and a smaller unidentified void behind the so-called Chevron. The Chevron is an assembly of four large limestone blocks arranged in the shape of two inverted downward open angles. Guided by the muon results, the ScanPyramids teams from Cairo University (Egypt) and the Technical University of Munich (Germany) have carried out three measurement campaigns between 2020 and 2022 to characterize the pyramid’s stone at the Chevron and confirm the presence of the ScanPyramids North-Face Corridor (SP-NFC) by employing a range of Non-Destructive Testing (NDT) techniques. This paper presents selected results from Ground Penetrating Radar (GPR) and Ultrasonic Testing (UST) measurements that were deployed to the surface of the Chevron. To support the NDT interpretation and to validate the gathered results, numerical simulations in 2D and 3D for GPR and UST were performed. Additionally, Image Fusion (IF) was used to combine the reconstructed GPR and UST images, allowing for a more informed interpretation and confirmation of features observed in the individual images. This work confirmed that behind the blocks of the Chevron lies a strong air anomaly that can be associated with the SP-NFC predicted with cosmic-ray muon radiography. In addition to providing proof of the existence of the corridor, the multi-modal NDT approach enabled the precise localization of the corridor and the determination of its geometry. Based on these findings, the ScanPyramids team will propose the coordinates for a small-diameter borehole, which will, for the first time, provide direct access to the hidden corridor and allow its inspection.

Localization and shape determination of a hidden corridor in the Great Pyramid of Giza using non-destructive testing - ScienceDirect

ScanPyramids SP-NFC 2023 Report

On 24 February 2023, directly after presenting the research results to the Scientific Committee headed by Dr. Zahi Hawass, the ScanPyramids team successfully showed the ScanPyramids-North Face Corridor (SP-NFC) to the Committee : 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.

ScanPyramids SP-NFC 2023 Report from HIP Institute on Vimeo.

Nouvelle découverte par ScanPyramids dans la Grande Pyramide (un article de la revue 'Nature')

Precise characterization of a corridor-shaped structure in Khufu’s Pyramid by observation of cosmic-ray muons


Khufu’s Pyramid is one of the largest archaeological monument all over the world, which still holds many mysteries. In 2016 and 2017, the ScanPyramids team reported on several discoveries of previously unknown voids by cosmic-ray muon radiography that is a non-destructive technique ideal for the investigation of large-scale structures. Among these discoveries, a corridor-shaped structure has been observed behind the so-called Chevron zone on the North face, with a length of at least 5 meters. A dedicated study of this structure was thus necessary to better understand its function in relation with the enigmatic architectural role of this Chevron. Here we report on new measurements of excellent sensitivity obtained with nuclear emulsion films from Nagoya University and gaseous detectors from CEA, revealing a structure of about 9 m length with a transverse section of about 2.0 m by 2.0 m.

Precise characterization of a corridor-shaped structure in Khufu’s Pyramid by observation of cosmic-ray muons | Nature Communications