The Vikos Gorge is a gorge in the Pindus Mountains of northern Greece. It lies on the southern slopes of Mount Tymfi, with a length of about 20 km, depth ranging from 120 to 490 m, and a width ranging from 400 m to only a few meters at its narrowest part.Vikos is listed as the world's "deepest relative to its width" gorge by the Guinness Book of Records among others.
The main part of the gorge stretches from the village of Vikos to Monodendri, and attains a depth of about 1,000 m (3,281 ft).
The landscape of the 20 km long gorge, 12 km οf which belongs to the park's core zone, presents a diverse relief and is characterized by abrupt altitudinal changes. Steep slopes and precipitous rocky cliffs dominate in the middle and higher zones respectively. Numerous gullies dissect both sides of the gorge and the movement of water detaching various rocky materials creates extended screes. The gorge, with a northwest-southeast direction, has been carved over millions of years by the Voidomatis River, a tributary of the Aoos. The Voidomatis is mostly seasonal, with year-round flow occurring only in the lower part of the gorge.
There is a natural viewing platform over the deepest part of the gorge at Oxia, a location 3 km by a newly constructed road from the village of Monodendri. Another viewpoint over the gorge is at Beloi, on the eastern side of the gorge, accessible from the village of Vradeto.
A hiking trail descends into the gorge from Monodendri. The trail then leads north through the gorge to the springs of the Voidomatis river, from where paths lead out of the gorge to the village of Papingo on the north side of the gorge, or to the village of Vikos on the south side of the gorge. It is also possible to hike south through the gorge from Monodendri to the 18th century stone bridges near Kipi.