Penios River

Penios river flows through the Prefecture of Larissa and goes into the plain of Larissa through the strait of Kalamaki while it flows into the Aegean Sea on the spot of Tsagezi. The straits of Kalamaki, of Rodia and of Tembi have been formed as a result of the fact that the plain of Larissa began to decline (at a rate of 1.5 m every 1000 years) while Pinios river was banking up around its bed.

This is how the river kept its exit to the Aegean Sea while its southern draining network was canalized into the Karla lake until it was drained.

Penios is the 3rd bigger river in Greece