Evidence map›Paper›PMID 41272276›Full record

ArticleScientific reports2025

Investigation of the North Face Corridor in the Great Pyramid of Giza using Electrical Resistivity Tomography.

Polina Pugacheva, Hussien Allam, Mohamed Fath-Elbab, Mohamed Sholqamy, Khaled Taie, Khalid Helal, Olga Popovych, Mohamed Elkarmoty, Norbert Klitzsch, Mehdi Tayoubi and 2 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Polina PugachevaChair of Non-destructive Testing, TUM School of Engineering and Design, Technical University of Munich, Lichtenbergstrasse 2, 85748, Garching near Munich, Germany. polina.pugacheva@tum.de.
Hussien AllamRock Engineering Laboratory, Faculty of Engineering, Cairo University, Gamaa Street 1, Giza, 12613, Egypt.
Mohamed Fath-ElbabRock Engineering Laboratory, Faculty of Engineering, Cairo University, Gamaa Street 1, Giza, 12613, Egypt.
Mohamed SholqamyUNESCO Chair on Science and Technology for Cultural Heritage, Faculty of Engineering, Cairo University, Gamaa Street 1, Giza, 12613, Egypt.
Khaled TaieRock Engineering Laboratory, Faculty of Engineering, Cairo University, Gamaa Street 1, Giza, 12613, Egypt.
Khalid HelalUNESCO Chair on Science and Technology for Cultural Heritage, Faculty of Engineering, Cairo University, Gamaa Street 1, Giza, 12613, Egypt.
Olga PopovychChair of Non-destructive Testing, TUM School of Engineering and Design, Technical University of Munich, Lichtenbergstrasse 2, 85748, Garching near Munich, Germany.
Mohamed ElkarmotyUNESCO Chair on Science and Technology for Cultural Heritage, Faculty of Engineering, Cairo University, Gamaa Street 1, Giza, 12613, Egypt.
Norbert KlitzschChair of Computational Geoscience, Geothermics and Reservoir Geophysics, RWTH Aachen University, Mathieustr. 30, 52074, Aachen, Germany.
Mehdi TayoubiDassault Systèmes, 10 Rue Marcel Dassault, 78140, Vélizy-Villacoublay, France.
Hany HelalUNESCO Chair on Science and Technology for Cultural Heritage, Faculty of Engineering, Cairo University, Gamaa Street 1, Giza, 12613, Egypt.
Christian U GrosseChair of Non-destructive Testing, TUM School of Engineering and Design, Technical University of Munich, Lichtenbergstrasse 2, 85748, Garching near Munich, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Despite some impressive examples of Electrical Resistivity Tomography (ERT) characterizing the internal structure of historical monuments, ERT is rarely considered a primary method for this purpose because it is challenging to adjust measurement procedures and inversion techniques for such intricate objects. In this study, ERT was first applied in the Great Pyramid of Giza to detect the presence of the ScanPyramids North Face Corridor (SP-NFC). The ERT measurement technique and data analysis procedure were adapted for this case, which was characterized by complex surface topography and limited space for placing ERT lines. A 3D CAD model of the Chevron area was designed for inversion based on a 3D point cloud. The inversion results show the existence of the SP-NFC, with average dimensions of approximately 2.5 m by 2.5 m, starting at a depth of around 1 m and extending at least 2 m into the pyramid. The ERT study thus provided volumetric data confirming both the size and extent of the SP-NFC, complementing the ground-penetrating radar (GPR) and ultrasound tomography (UST) studies conducted simultaneously in the Chevron area.

Indexed as

3D CAD modelChevronElectrical Resistivity TomographyGreat Pyramid of GizaNorth Face CorridorScanPyramids

Identifiers

PMID41272276
PMCPMC12638825

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.