Boyd’s Bible Dictionary:
A valley near Jerusalem (Gen. 14:17; 2 Sam. 18:18).
Concise Bible Dictionary:
This is supposed to be in the valley of the Kidron, where there is still a monument called the Pillar of Absalom, though the existing one cannot be the pillar he erected (2 Sam. 18:18). The King’s Dale in Genesis 14:17 cannot be identified.