The Fonias waterfall are located in a gorge north of Fonias on the Island Samothraki, Greece.
From Therme drive 5 kilometer east to a big parking along the main road (gps 40.490459, 25.654984). From here you have to follow the river Fonias upstream.
There are several waterfalls on the mountainous island Samothraki in Greece. One of the most beautiful waterfalls are located in the Fonias gorge at the north side of the island Samothraki. The common name for the waterfall is the Fionas waterfalls or Vathres waterfall. In Greek the waterfalls are named: Καταρράκτης Φονιά, Καταρράκτης Γερανιά and Καταρράκτης της Κλείδωσης.
After approximately 35-40 minutes you meet the first impressive waterfall called “Gria” or “Phonias” with a height of about 15 meters. Climbing further up you will see the “Gerania Vathra” with a small drop and a little further upstream you will see the tallest waterfall of all known as “Kleidosi”, with a height of 35 meters.
You can hike further upstream, but the hike gets more and more difficult. If you want to do this part wear good trekking shoes. You can find a description of the walk on Viewranger.
With several ponds in the river, in front of the waterfalls, this is the perfect place to swim, but the water can be quite cold. Note: swimming nude is very common here.
Best time to visit the Fonias gorge waterfalls is probably springtime or after a rainy period.