MOSERAH (mō-sē'ra, bond). An encampment of the Israelites in the wilderness near Deut.10.6). In KJV it is Mosera. In Num.33.30 the plural form Moseroth is used as the name of the place. The site is unknown, but it was near Mount Hor, by the border of Edom.
International Standard Bible Encyclopedia (1915)
mo-se’-ra, mo’-se-ra (mocerah, "bond"): Perhaps Moser with the "he" of locale (direction), "to Moser" (De 10:6).
mo-se’-roth, mo’-se-roth, -roth (moceroth, "bonds"): A desert camp of the Israelites between Hashmonah and Bene-jaakan (Nu 33:30,31). It is probably the same as Moserah (De 10:6), though in that passage the name follows Bene-jaakan. There Aaron died and was buried.
See Wanderings of Israel.