The river springs from the area known by the name of the village Glykí at an altitude of 1.600 metres in the mountains of Soúli and discharges in the area of Ammoudiá on the Ionian coast. On its way, it passes through wonderful gorges, proud and audacious precipices, endless landscapes of peace and handsomeness, and it forms some ponds and lakes here and there; and all that under the surveillance of age-old plane trees.
Plane trees bending over gurgling fountains seem to be begging for water, exhausted as they are by the load of climbing plants that endure eternity by clinging to the trees’ trunks. Snow white limestone rocks lie on the bed of the river, where thick ferns lounge around. Dominated by nuances of green, exciting paths stretch along the river; at times they cross it, as they tread on arched rocky bridges. At a certain point the river narrows between green-clad steep high cliffs that seem to be forming an enormous gate through which the water of the river rushes fiercely; no wonder the legendary name of the spot is “The Gate to the Underworld”