He hunted it, traveled it, sheltered in it, and eventually died in it and was covered by its stone.

The stone gave him back, eventually.

The DNA told us who he was.

And who he was turned out to be different from everything we assumed.

That is the beginning of a better understanding.

The cave held the secret for ten thousand years.

The science finally opened the stone.

The Genetic Basis Of Lactose Intolerance: A Deeper Look