Ground-penetrating radar (GPR)
Uses radio waves to detect underground objects
Episodes
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#3976: How a Landmine Stays Lethal for 50 YearsWhy mines stay dangerous for decades — and why robots still can’t clear them fast enough. -
#3641: Archaeology’s Ray Gun Era: Drones, LiDAR & AI on DigsDrones, ground-penetrating radar, and AI are transforming archaeology. The fine brush is just 5% of the story. -
#2576: The Centimeter-Level Challenge of Burying City PowerHow cities bury high-voltage cables with centimeter precision and why some still keep wires overhead. -
#827: When Military Tunnel Tech Maps the City BelowExplore the cutting-edge technology used to map the hidden world beneath our feet, from military tunnels to urban infrastructure. -
#481: Steel and Stone: Engineering Jerusalem’s Pilgrimage RoadDiscover how modern engineering and ancient history collide beneath the streets of Jerusalem to reveal the legendary 2,000-year-old Pilgrimage Road.