Deuteronomy 34:5-6

34:5 So Moses, the servant of the Lord, died there in the land of Moab as the Lord had said. 34:6 He buried him in the land of Moab near Beth Peor, but no one knows his exact burial place to this very day.

Deuteronomy 34:8

34:8 The Israelites mourned for Moses in the deserts of Moab for thirty days; then the days of mourning for Moses ended.