Deuteronomy 34:5-8

So Moses the servant of the LORD died there in the land of Moab, according to the word of the LORD, 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. Moses was 120 years old when he died. His eye was undimmed, and his vigor unabated. And the people of Israel wept for Moses in the plains of Moab thirty days. Then the days of weeping and mourning for Moses were ended.