article_snippet: Researchers discovered the structure, built in 178 BC, using Light Detection and Ranging (Lidar) – a technology which uses pulsed lasers to measure distances to the Earth.
article_snippet: A scanner was placed aboard a helicopter which then flew over parts of Muggia Bay.
article_snippet: Lidar mapping was originally used to provide intelligence after earthquakes, military spying and for river erosion detection.
article_snippet: Lidar technology helped uncover The main fortthe Bay of Muggia .
article_snippet: Lidar technology possibly paved the way for the modern Italian city of Trieste .
highlights_snippet: Scientists found the structure, built in 178 BC, using Lidar technology .
  