Book of Jasher
14 And it was in the fifty-sixth year of the life of Lamech when Adam died; nine hundred and thirty years old was he at his death, and his two sons, with Enoch and Methuselah his son, buried him with great pomp, as at the burial of kings, in the cave which God had told him.
15 And in that place all the sons of men made a great mourning and weeping on account of Adam; it has therefore become a custom among the sons of men to this day.
16 And Adam died because he ate of the tree of knowledge; he and his children after him, as the Lord God had spoken.
Genesis 3:7 states that they sewed fig leaves together to hide their nakedness.
Genesis 3:7 Then the eyes of both of them were opened, and they realized they were naked; so they sewed fig leaves together and made coverings for themselves. NIV
Just something on which to ponder.