Camp sites in MIchigan UP

Thanks everyone for the great suggestions! As we are limited on time, we are thinking we will likely visit the area around pictured rocks and take a few day trips to surrounding areas. Hopefully will find availability through the week. We hope to return again to visit the western half. On our way home we hope to visit the area around Sleeping Bear Dunes. We hear a lot of great things about that area including Platte river CG. No availability there. If anyone has CG suggestions on that area, it would be appreciated! Thanks again!