Deuteronomy 34:6

6 He buried hima in Moab, in the valley opposite Beth Peor, but to this day no one knows where his grave is.

Read Deuteronomy 34:6 Using Other Translations

And he buried him in a valley in the land of Moab, over against Bethpeor: but no man knoweth of his sepulchre unto this day.
and he buried him in the valley in the land of Moab opposite Beth-peor; but no one knows the place of his burial to this day.
The LORD buried him in a valley near Beth-peor in Moab, but to this day no one knows the exact place.