Researchers discover vast ancient gold mines in Spain, the ...
A rock-cut aqueduct in León, Spain. Wikimedia CC . PastHorizons explains the LiDAR (Light Detection and Ranging) technology, when mounted on planes or drones, "comprises a laser sensor which scans the ground […] with geographical references provided by GPS ground stations. The data obtained is represented by point clouds, which are processed with a piece of software to construct a ...