Experts are alarmed by the discovery of lakes beneath the Kifisos River in Greece. Speleologist Georgios Kafantaris, part of the team that identified the lakes, highlighted the deteriorating state of the riverbed, which could contain uncharted lakes. Structural engineer Panagiotis…

Cave explorers have found a third underground lake in the Kifisos River, measuring 60 meters in length, located near Peristeri. This phenomenon, caused by the erosion of construction materials, has raised alarms about potential risks to the structural integrity of…