Zoar

they made war together against Bera king of S'dom and against Birsha king of 'Amora, Shin'av king of Admah, Shem'ever king of Tzvoyim, and the king of Bela (which is the same as Tzo'ar).

Then the kings of S'dom, 'Amora, Admah, Tzvoyim and Bela (that is, Tzo'ar) came out and arrayed themselves for battle in the Siddim Valley