Issorium
The Issorium or Issorion, or Mount Issorion, was a hill on the northern city border of Sparta, possibly the heights known today as Klaraki. On it was a sanctuary and temple to the goddess Artemis, in which context the goddess was surnamed Artemis Issoria.
During the Theban–Spartan War, circa 370 BC, the Issorium was seized by a group of Spartan mutineers; Agesilaus II broke up the conspiracy and had fifteen of the mutineers put to death.