Au Sable State Forest - Grayling Unit is one of the Michigan parks in thicket's catalog. thicket is a field guide to the parks near you: it maps the ones you have never noticed, gives you a reason to actually go, and keeps a record of where you have been.
Where it is
Au Sable State Forest - Grayling Unit is in Crawford County, Michigan. Its approximate coordinates are 44.75704, -84.54813.
Check in at Au Sable State Forest - Grayling Unit
thicket verifies you are actually here by GPS when you check in, so a visit means you went. Checking in builds a streak, earns achievements, and fills in your map of the places you have been.