The Dyspontion Ruins was the non-submerged part of the ruined town founded by the perioikoi, non-citizen inhabitants of Sparta, located in the Forgotten Swamps of Elis, Greece. Connected to them was the submerged part of the ruins.
Located by the mountainous route between the Sanctuary of Olympia and Elis City, the community was known for joining Pisa in a revolt against Elis in 570 BCE. As a consequence, the community was destroyed and abandoned.
More than 100 years later the site was visited by the Spartan misthios Kassandra during the Peloponnesian War. She discovered that the ruins had been claimed by the Followers of Ares, and proceeded to kill their chief, release their captive, and claim their valuables. She also discovered an ancient tablet on the site