Joshua 10:16

‘ But these five kings fled, and hid themselves in the cave at Makkedah.'

Taken by surprise from the beginning, totally routed, their armies decimated both by sword and natural catastrophe, and totally exhausted, the five kings who had led their people into disaster took shelter in a cave in the area around the city of Makkedah. Possibly the point is that Makkedah itself refused to accept them. They were fugitives and could present a problem. Makkedah did not want to incite Joshua into attacking them. (If so it did Makkedah little good. But in such situations any attempt to prevent trouble is better than nothing). The site of Makkedah is unknown.