At the end of the 150-long tunnel, there is a lake created by a dam completed in 1931. The lake is 200 metres long, 10 to 50 metres wide and 1 to 8 metres deep. It is used as a depository for the irrigation of Kolymbia region. It is the only place in Rhodes where visitors can enjoy a swim in fresh water, cool natural springs and a beautiful forest around the lake. Those wishing to visit the dam and the cascade must turn left as they exit the tunnel.