In March 2025, members of the Khafre Project—including Corrado Malanga, Filippo Biondi, and Nicole Ciccolo—publicly claimed to have discovered large-scale man-made underground structures beneath the Giza pyramids using radar imaging (see: https://www.telegraph.co.uk/news/2025/03/23/egyptologists-row-over-underground-city-beneath-pyramids/).

This market will resolve to "Yes" if definitive scientific or archeological evidence confirming the existence of large-scale, man-made underground structures beneath the Giza pyramids is made public by December 31, 2025. Otherwise, it will resolve to "No".

Only underground structures which substantively match the description of those claimed in by the Khafre Project in their March 2025 announcement will qualify.

An official announcement from either the the Egyptian Ministry of Tourism and Antiquities (MoTA) or the Supreme Council of Antiquities (SCA) confirming the existence of large-scale, man-made underground structures beneath the Giza pyramids will qualify for a "Yes" resolution.

This market's primary resolution source will be official announcements from the Egyptian government, however a consensus of credible research and reporting may also be used.