Commentaire sur Les Nombres 33:42

ויחנו בצלמונה, “they encamped at Tzalmonah.” Both this way station as well as ויחנו בפונון, have not been mentioned by these names in the portion of Chukat in chapter 21,10, but as Ovot, as this was a turning point in their south easterly route, from which they turned northward.