Cephalonia - Swallow Holes

(Local Name: Katavóthres) In the area of Lassi, 2.5km from Argostoli, are the famous Katavóthres (swallow-holes), a rare geological phenomenon. Here sea water enters openings in the rock and "disappears". Only recently were scientists able to find that the water travels northeast underground all the way across the island finally to emerge at Melissani, near the village of Karavomilos, opposite Sámi.