The scientific team that shocked the world this spring by revealing what they believe is a vast “hidden city” beneath Egypt’s Khafre Pyramid has done it again — and the story just keeps getting bigger.

Last week, the researchers announced they have now discovered a second massive underground structure, this time beneath the Pyramid of Menkaure, using the same advanced acoustic and seismic tomography methods that drew global attention (and controversy) in March.

If true, these findings could rewrite our understanding of Giza, the origins of the pyramids, and even ancient human history itself.

👉 You can follow this story LIVE at Cosmic Summit 2025 — where the Khafre Project team will deliver a full update, including new data and images — and where other presenters will explore its connections to ancient catastrophes and lost civilizations.

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Source: Daily Mail UK

These new revelations were covered in a detailed article in the Daily Mail, which you can read here:
👉 https://www.dailymail.co.uk/sciencetech/article-13401419/egypt-hidden-underground-city-giza-pyramids.html

⚠️ Please note: this article may be behind a paywall or restricted in some regions — so we have summarized key highlights below for our readers.

Key Excerpts from the Daily Mail

“Scientists who revealed an underground ‘hidden city’ in Egypt have announced the discovery of a second city they say ‘proves’ the existence of a massive subterranean complex linking the Giza pyramids 2,000 feet beneath the surface.”

“Filippo Biondi, a radar expert from University of Strathclyde in Scotland and co-author of the research, told the Daily Mail that their data shows a 90 percent probability that the Menkaure shares the same pillars as Khafre.”

“‘We firmly believe that the Giza structures are interconnected, reinforcing our view that the pyramids are merely the tip of the iceberg of a colossal underground infrastructural complex,’ Biondi said.”

A Global Debate

As with the team’s initial Khafre discovery, these new results are drawing strong criticism from mainstream Egyptologists — most notably Dr. Zahi Hawass, who claims their radar technology is incapable of imaging at such depths.

However, independent scientists — including Dr. Jim Kennett, a leading member of the Comet Research Group and longtime friend of the Cosmic Tusk — say the idea of a lost prehistoric civilization whose knowledge influenced ancient Egypt is not far-fetched.

Biondi’s team dates the structures to ~38,000 years ago, which they link to an advanced civilization lost in the cataclysm believed to have occurred around 12,800 years ago — a theory strongly supported by impact evidence at sites like Abu Hureyra.

Joe Rogan has called the findings “fascinating,” and his recent discussions on the topic have driven millions of new eyes to the Khafre Project:
▶️ Joe Rogan on the Khafre Project
Other Cosmic Summit topics on Rogan:
▶️ Joe Rogan & Ben Van Kerkwyk on Egyptian Vases Exhibit coming to Cosmic Summit
▶️ Atlantica Trailer — Groundbreaking Atlantis Documentary premiering at Cosmic Summit

Ancient Texts Support the Story?

As researcher Andrew Collins notes, ancient Edfu Building Texts reference an ancient “sacred domain” destroyed by a catastrophic flood — whose survivors stored sacred objects in an underground Underworld of the Soul.

Collins argues this could correspond to the structures now being imaged beneath Giza. The symbolism of serpents in the text may even refer to a comet strike — the same type of cosmic disaster many believe wiped out this ancient civilization.

“The newly-discovered shafts and chambers could rewrite history if confirmed to be true.”