Thorn Creek Headwaters Preserve 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
Thorn Creek Headwaters Preserve is in Will County, Illinois. Its approximate coordinates are 41.43273, -87.71911.
Check in at Thorn Creek Headwaters Preserve
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.