In the Western part of Lesvos, between the settlements of Khidera and Eresos, in the Methalia stream is the homonymous, impressive, double waterfall.
The waterfall is created due to faults that affect the volcanic rocks of the area, specifically the andesitic lavas. The Methalia stream originates from Lefkorrachtis (578m.). The cracks create terraces that interrupt the smooth flow of water. The waters of the stream form two successive steps, where the momentum of the water during its fall creates two natural depressions at the point of fall, forming natural ponds.
Along the Methalia stream, a continuous flow of water is observed throughout the year. For this reason, a water mill was built in the place of the waterfall, which in the past ground wheat produced in the area.
Then, the Methalia stream continues its course crossing the gorge of the same name, which was cut through volcanic rocks and joins the Chalandra river, which ends in the artificial lake of the Eresos dam in the area of the Pythariou Monastery.
