GPS routed us to Snowmobile, ATV, Logging, & Dogsled road !!

So after Tahquamenon Falls decided to go to Pictured Rocks. Put in 'Eastside' Entrance. Didn't know there is no 'entrance' to Pictured Rocks National Lakeshore. Took turn it recommended, first ran into ATVs at a stopsign, that wondered what we were doing. Then logging road w/cut logs on both sides. Then finally ruts, water and looked like a bicycle path. Directed us to take Sawmill Cut Road.... Finally ran into a local, he said you need to turn around, go back, you can't get there this way! Said a group of people from India got lost in mud hole a week earlier in rental car thanks for GPS.
On road out, saw a dogsled road that led to dogsled hotel. Snowmobile roads everywhere!