artifact looks like a shoe

[not rocks]

Any ideas of what this could be? It was found at an indian camp.alongside other stone artifacts.

 

[Breezie]

Limestone perhaps. Breezie

 

[Gunrunner61]

What is the diameter of the hole? Are there any tunnels in your imediate area ? Could be the bottom of a drill hole.
Just letting the old mind run wild....................HH