VOIDOMATIS RIVER AND TIMFY PRECIPICE . . . . . . (GREECE, EPIRUS, IOANNINA, ZAGORI, VOIDOMATIS) . . . . . . The beautiful mountain river of Voidomatis in Vikos Aoos National Park, of Northern Greece. Voidomatis is a tributary of the Aoos river, which originates from Tymfi mountain (the summit of which is seen in the b/g), streaming through the Vikos Gorge. This river has been characterized as the “cleanest river” in Europe, as it does not face any environmental issues, flowing through one of the most beautiful unspoiled and pristine natural locations of Greece. The river is spanned by numerous very old and picturesque stone bridges, and is well known for water sports such as rafting, canoeing and kayaking.