WHITEHALL — The rust-colored pile of rocks appears out of place, jutting out of a hillside in the Whitetail-Pipestone Recreation Area.

PIPESTONE, Minn. — Under the tall prairie grass outside this southwestern Minnesota town lies a precious seam of dark red pipestone that, for thousands of years, Native Americans have quarried and ...

Professor Jim Cotter of University of Minnesota Morris teaches his students how to use geology to read the stories embedded in the earth. CATHY WURZER: Here's a question for you-- where can you find ...

PIPESTONE, Minn. (AP) — Under the tall prairie grass outside this southwestern Minnesota town lies a precious seam of dark red pipestone that, for thousands of years, Native Americans have quarried ...

The Associated Press Mark Pederson “Swift Horse,” a member of the Sisseton-Wahpeton Dakota Nation and a fourth generation quarrier, saws through a piece of pipestone while demonstrating his craft at ...