A weak breeze nudges the thick summer air that settles across southwestern Minnesota's prairie. The staccato calls of grassland birds mix with the gritty rasp of metal files and sandpaper as Mark and Cindy Pederson sit in the shade, shaping and carving pipestone.
Eagle claws, turtles and bison made from the soft, reddish stone — quarried from the earth beneath them — mingle on a table where visitors to Pipestone National Monument stop to admire the brother-sister duo's work. With mauve dust covering their hands and clothing, the siblings happily provide answers to onlookers' questions.
"We enjoy talking to people," says Cindy, who paused to show a young man how beeswax makes the stone shine.
The Pedersons, who are members of the Sisseton-Wahpeton Dakota, regularly demonstrate at the Pipestone visitor center, along with their cousins. Together, they preserve the skills for hand-quarrying the stone and the sacred art of carving it, which stretch back centuries. They're also carrying forward a family tradition that began when their great-grandparents Moses Crow and Estelle Crow-Wilson moved to the Pipestone, Minn., area in 1927 to work the revered stone.
Cindy started carving pipestone at age 5 after watching her grandparents. By the time she was 13, her Aunt Betty taught her how to create a turtle, which represents long life, fertility and protection. The segments on their shells also represent the 13-moon lunar calendar.
Mark has carved close to 1,000 bison pipes over the years, but his specialty is an eagle claw. He and his sister may use modern metal tools and an array of sandpaper, but they're also quick to demonstrate an ancient pump drill or simple stone tools that long-ago ancestors may have used.
Inside the visitor center, Mark points at black-and-white photos of men in the quarries or carving.
"That's my grandfather and my great-uncle," he says with pride.