Self-guided hike along about a mile of lantern-lit trail through the woods, followed by a campfire and treats. Dog walkers welcome. 6–8:30 p.m. (check in by 7:30 p.m.), Rolling Hills County Park, 7660 Stony Creek Rd., Ypsi. $15 per household (up to 4 people), plus $6 (nonresidents, $10) vehicle entry fee. Preregistration (1/household) required at washtenaw.org/registerparks; #RH721311.