Sensational find in Italy: Cavers discover underground Adriatic river. “The path to follow was actually limited to a centimeter-long gap that was so narrow that it was impossible to put a hand in,” says cave explorer Marco Restaino.
It has long been known that the karst springs of the Timavo are fed by the Slovenian river Reka. The Reka/Timavo river rises in Croatia as Vela Voda and flows 52 kilometers above ground before disappearing 160 meters deep in a cave for 35 kilometers.