Thousands of visitors are expected to attend the party, which is one of the major music and camp events of the summer in Greece.
The party will last five days with lots of music performed by Greek and foreign groups and artists, as well as surprise guests that will perform on four different stages.
Vassilis Papakonstantinou, Miltos Paschalidis, Tzimis Panoussis, Melisses, Yiannis Zouganelis, Babis Stokas, Natassa Bofiliou, Imam Baildi, along with international groups and DJs will kick-off the party from early in the morning until late at night.
Visitors from neighbouring countries will mingle with locals and will camp in the four camping zones to listen to music, swim in the river and take part in a series of parallel events as excursions, sports and other.
A fully equipped restaurant, a fast food, a bakery and a bar for drinks and coffee are available in the festival area.