Gudgodah
Gudgodah is a wilderness camp on the desert journey from Egypt. Deuteronomy names it once on the leg between an unnamed prior stop and Jotbathah; the Numbers itinerary, retraversing the same stretch, calls the same site Hor-haggidgad. The pair Gudgodah / Hor-haggidgad and the next station Jotbathah are the verbal anchor that fixes them as the same place.
The Deuteronomic Itinerary
In the Deuteronomic recap of the wilderness journey, Gudgodah is one of two named stations on its stretch: "From there they journeyed to Gudgodah; and from Gudgodah to Jotbathah, a land of brooks of water" (De 10:7). The next station, Jotbathah, is described as a place of running water, and Gudgodah's identification rests on the move from it to Jotbathah.
The Numbers Itinerary
The same leg appears in the Numbers stations-list with a longer-form name: "And they journeyed from Bene-jaakan, and encamped in Hor-haggidgad. And they journeyed from Hor-haggidgad, and encamped in Jotbathah" (Nu 33:32-33). Hor-haggidgad → Jotbathah is the same sequence Deuteronomy gives as Gudgodah → Jotbathah, and the shared next-station fixes the two names as referring to the same wilderness camp.