The goddess of Irkalla, the land of the dead or underworld. The older sister of Innana. Refereed to as "Great Lady of the Earth" or "Lady of the Great Earth".
Ereshkigal was the only one who could pass judgment and give laws in her kingdom. The main temple dedicated to her was located in Kutha.
The goddess Ishtar refers to Ereshkigal as her older sister in the Sumerian hymn "The Descent of Inanna" (which was also in later Babylonian myth, also called "The Descent of Ishtar"). Inanna/Ishtar's trip and return to the underworld is the most familiar of the myths concerning Ereshkigal.