TSK · Joshua 18:19

All these joined together in the valley of Siddim (the same is the Salt Sea).

then your south quarter shall be from the wilderness of Zin along by the side of Edom, and your south border shall be from the end of the Salt Sea eastward;

that the waters which came down from above stood, and rose up in one heap, a great way off, at Adam, the city that is beside Zarethan; and those that went down toward the sea of the Arabah, even the Salt Sea, were wholly cut off. Then the people passed over right against Jericho.

Their south border was from the uttermost part of the Salt Sea, from the bay that looks southward;