Boyd’s Bible Dictionary:
Supposedly the valley, or depression, of Akabah, extending from Dead Sea to Gulf of Akabah
(2 Sam. 8:13; 2 Kings 14:7; 1 Chron. 18:12; 2 Chron. 25:11; Psa. 60 title). But many excellent authorities limit it to a section of Edom near Petra.
Concise Bible Dictionary:
Place where battles were fought by David and Amaziah against their enemies (2 Sam. 8:13; 2 Kings 14:7; 2 Chron. 18:12; 2 Chron. 25:11; Psalm 60 title). It is supposed to be in the northern part of the Arabah valley, south of the Dead Sea.