Valley of Travelers is the valley near Dibon.

Dibon pining; wasting. (1.) A city in Moab (Num 21:30 ); called also Dibon-gad (33:45), because it was built by Gad and Dimon (Isa 15:9 ). It has been identified with the modern Diban, about 3 miles north of the Arnon and 12 miles east of the Dead Sea. (See Moabite Stone)

EBD