Researchers using a revolutionary 'Muon-Sieving' Lidar system have discovered a previously unknown network of subterranean chambers beneath the Tomb of Shapur I in Bishapur, Iran. This technology, which combines cosmic-ray muon detection with ultra-high-resolution laser scanning, allowed the team to peer through meters of solid rock without any physical excavation or risk to the site's structural integrity.
The newly identified corridors and rooms appear to be part of a sophisticated structural design intended to protect the inner sanctum from seismic activity and looting. The discovery provides fresh insights into the funerary architecture of the Sasanian Empire and the advanced engineering capabilities of 3rd-century Persian builders who integrated defensive measures directly into the mountain bedrock.