Prairie du Rocher Precinct is one of the Illinois 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
Prairie du Rocher Precinct is in Randolph County, Illinois. Its approximate coordinates are 38.08524, -90.15747.
Check in at Prairie du Rocher Precinct
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.