Accessible by car with multiple access options including boat-in and hike-in, Underdown Campground operates as a primitive site without running water or restroom facilities. Campers can set up anywhere except directly on the road, with ample space available throughout most of the area. The water access zones tend to have tighter spacing between sites.
Multiple small lakes surround the campground, providing bluegill fishing opportunities and water access for boaters. The Ice Age Trail passes through the area for hikers. Site cleanliness depends on previous campers maintaining the area, as this dispersed camping setup relies on pack-it-out principles. Campers seeking additional developed facilities can explore campgrounds around Irma or visit Horn Lake Camping for more structured amenities.
RV Road Trip Guides
Map & DirectionsUnderdown Campground is located in Wisconsin near Irma
Directions
Located 13 miles northeast of Merrill on Copper Lake Avenue.
Coordinates
45.32276392 N
89.60337655 W
Connectivity
- T-MobileLTESome Coverage
- VerizonLTESome Coverage
- AT&TNo Coverage
Connectivity
- T-MobileLTESome Coverage
- VerizonLTESome Coverage
- AT&TNo Coverage
Access
- Drive-InPark next to your site
- Walk-InPark in a lot, walk to your site.
- Hike-InBackcountry sites.
- Boat-InSites accessible by watercraft.
Site Types
- Tent Sites
- RV Sites
- Standard (Tent/RV)
- Group
- Equestrian
Features
For Campers
- Phone Service
- Alcohol
- Pets
- Fires
Drive Time
- 31 min from Wausau, WI
- 1 hr 52 min from Eau Claire, WI
- 1 hr 54 min from Green Bay, WI
- 2 hrs from Appleton, WI







