PierBridge,
Not sure , but I think the lake next to Big Sandy just North of the Pier along Hwy 65 (Ratt Lake??). If you exit at the lake and take the dirt road North there, look at a map but I believe that is State Forest???? could be wrong . Lots of ridges and ravines in there. I have driven back there and have seen bear baits back there so be careful. I have seen grouse on the roads when I have driven there. I’m not a 100% sure, but I believe that is state land. Check a map. My Aitkin county plot map is up at the cabin.