Known locally as Τρύπα Τατάρνας (Tatar Hole), this natural chasm is one of the region’s most powerful and somber historical sites. During the years 1941–1944, and later in the period of the Greek Civil War, the pit became a place of martyrdom. Thousands of people from across Western Greece were brought here after long, brutal marches through the mountains, and many never returned.
Due to the depth of the chasm and the materials later thrown into it, the victims were never fully recovered, and the site remains a silent memorial. Over time, underground waters connected to Lake Kremasta have carried traces of this tragic history beyond the pit itself. Today, Tatar Hole stands untouched and unadorned — a stark, quiet reminder of the human cost of war and division.