The forgotten quarry history behind Sandstone, MN's bluffs and climbing cliffs

Sandstone, Minn., is known today for rock climbing, ice climbing and whitewater rafting. But before it became an outdoor recreation destination, it was one of the Midwest's most important sandstone-producing communities. When a Curious Minnesota listener asked about the area's towering quarry walls, Minnesota Star Tribune reporter Christa Lawler set out to uncover their history. What she found was…