They set out from Hazeroth and camped at Rithmah.
And Aaron the priest went up into Mount Hor, at the commandment of the Lord,.... Delivered to Moses: and died there in the fortieth year after the children of Israel were come out of Egypt; not being suffered to go with them into the land of Canaan, because of his sin of unbelief at Kadesh, the last place from whence they came: in Mount Hor...
FROM SINAI TO KADESH AND PLAINS OF MOAB. (Num. 33:16-56) Kibroth-Hattaavah ("the graves of lust," see on Num 11:34) --The route, on breaking up the encampment at Sinai, led down Wady Sheikh; then crossing Jebel-et-Tih, which intersected the peninsula, they descended into Wady Zalaka, pitching successively at two brief, though memorable, stations (Deu 9:22); then they encamped at Hazeroth ("unwalled villages"), supposed to be at Ain-Hadera (see on Num 11:35).
Commenting on Numbers 33:16-56
Rithmah ("the place of the broom")--a station possibly in some wady extending westward of the Ghor.