Doncaster Demonstration State Forest is one of the Maryland 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
Doncaster Demonstration State Forest is in Charles County, Maryland. Its approximate coordinates are 38.41599, -77.13552.
Check in at Doncaster Demonstration State Forest
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.