Why did his people go so far underground?

What did the minerals do for them?

What did the experience of going underground mean, beyond the practical task of mineral collection?

Why did the mining eventually stop?

These questions have been asked, in different ways, for the sixty years since serious archaeological research began at Mammoth Cave.

They have been asked by researchers who spent careers underground following the ancient evidence.

They have been asked by park interpreters who describe the discovery to visitors standing near the boulder that killed him.