Numbers 20:27,28
And Moses did as the LORD commanded: and they went up into mount Hor in the sight of all the congregation.
Nave's Topical Index—AKJV

Deuteronomy 10:6
And the children of Israel took their journey from Beeroth of the children of Jaakan to Mosera: there Aaron died, and there he was buried; and Eleazar his son ministered in the priest's office in his stead.
Nave's Topical Index—AKJV

Deuteronomy 32:50
And die in the mount where you go up, and be gathered to your people; as Aaron your brother died in mount Hor, and was gathered to his people:
Nave's Topical Index—AKJV