'Mouth of the Cave' in the Bible

Joshua said, "Roll large stones to the mouth of the cave, and set men by it to guard them;

Then Joshua said, "Open the mouth of the cave, and bring those five kings out of the cave to me."

It happened at the time of the going down of the sun, that Joshua commanded, and they took them down off the trees, and cast them into the cave in which they had hidden themselves, and laid great stones on the mouth of the cave, which remain to this very day.