In 2008 Louis de Cordier helped run the largest geophysical survey ever done on an Egyptian archaeological site. Sixteen geophysicists, ground-penetrating radar, electro-resistivity and geomagnetics, across two plots at Hawara in the Fayum. Five meters down the survey confirmed a single stone foundation plate measuring 304 by 244 meters, close to ten football fields under one slab, with hundreds of rooms, enormous walls and sealed structures beneath it. Herodotus wrote that this building surpassed the pyramids in greatness. Flinders Petrie stopped digging in 1888 when he hit corrosive salt water, and academia has said ever since that there is no labyrinth. 00:00 The 2008 Mataha survey that found rooms under Hawara 07:58 The call from Egypt that pulled the paper offline 14:23 The 1820 canal that flooded the pyramid entrance 21:04 Egypt starts digging: megalithic walls exposed in March 31:03 NDAs, the hidden atrium, and the 40-meter object 40:04 Orichalcum, electrum, and the circle of gold 48:13 Boreholes, nano-drones, and a moon base in the desert 55:48 Giza's blue shaft, Schumann resonance, and cosmic rays Then the trouble started. The team published, presented the work to the Supreme Council of Antiquities, and drew UNESCO interest in world heritage status. Ghent University filled a hall with 600 people. The story ran on front pages across Europe, the Belgian king showed a magazine cover to Mubarak's wife in Cairo, and days later Egypt's National Research Institute called Louis and asked him to pull the paper from the journal. Colleagues there were being threatened. The institute sits inside the military complex, so the find was treated as a national security breach, and Louis went onto a blacklist that kept him out of the country. He walks Danny through the rest of it. Satellite scans in 2014 and 2015 mapped four levels down to roughly 100 meters, including a chamber 100 meters long by 40 wide carved out of bedrock, Persian tomb shafts, a moat shaped like an omega, and a freestanding metallic object about 40 meters across sitting in a central atrium, held under NDAs for a decade. He explains the canal Linant de Bellefonds cut straight at the pyramid in 1820, which put the entrance under water for a century. He covers the sacred crocodiles and the priests who kept Herodotus out of the lower levels, and the circle of gold used to calculate cataclysms on a 25,920-year cycle. Egypt drained the site and started digging in March. Louis says the excavation is still shallow, and the question he cannot answer is whether anyone will be allowed past minus 20 meters. Learn more about your ad choices. Visit podcastchoices.com/adchoices