Harbor Springs, at the southern end of the Tunnel of Trees, is the kind of charming lakeside town that makes you contemplate selling your house and moving to Michigan on the spot.

The western edge of Michigan’s Upper Peninsula hides a colossal secret that makes your average roadside attraction look like a carnival prize participation trophy.

A sunny, breezy Wednesday brings a break from the recent muggy conditions, but a few pop-up storms are still possible during ...