Judges 8:10

Now Zebah and Zalmunna were in Karkor, and their hosts with them, about fifteen thousand men, all that were left of all the hosts of the children of the east: for there fell an hundred and twenty thousand men that drew sword.

Now Zebah and Zalmunna were in Karkor - a town on the eastern confines of Gad. The wreck of the Midianite army halted there.