Mount of the Amorites
Easton's Dictionary
The range of hills which rises abruptly in the wilderness of et-Tih (“the wandering”), mentioned Deut. 1:19, 20, “that great and terrible wilderness.”
International Standard Bible Encyclopedia
("Hill-country of the Amorites" (De 1:7,20,24; compare Nu 13:29; Jos 10:6, etc.)): The region intended is that afterward known as the hill country of Judah and Ephraim, but sometimes "Amorites" is used as a general designation for all the inhabitants of Canaan (Ge 15:16; Jos 24:8,18, etc.).
See AMORITES.