Athamanika, Mountain range in Arta, Ioannina, Karditsa and Trikala regional units, Greece

Athamanika is a mountain range in Epirus that spans across a large area with its highest peak exceeding 2,400 meters. The mountains form a complex system of peaks and valleys, with dense forests and rocky ridges characteristic of Greek highlands.

During the Axis occupation of Greece from 1941 to 1944, the Athamanika range was the main base of the EDES resistance organization. Its forests and high ridges between the Arachthos and Achelous rivers gave the fighters cover. Earlier, under Ottoman rule, the Tzoumerka villages held privileges as "Kefalochoria", and Katsonis, a noted kapetanios, came from this area.

The villages scattered across the slopes maintain traditional crafts and local ways of life passed down through generations. Visitors can see how mountain communities continue to rely on practices shaped by the terrain and climate of this region.

The mountains are accessible from several directions, with trails ranging from gentle walks to challenging routes suited to different skill levels. Weather changes can happen quickly at higher elevations, so preparation and proper gear are important before setting out.

The name Tzoumerka comes from a Slavic word for hellebore (čemerika), a plant of the high pastures. The range's other name, Athamanika, recalls the Athamanes, the ancient tribe settled here that flourished in the 3rd and 2nd centuries BC.