Black River - Mima Prairie Glacial Heritage Preserve (limited public access) is one of the Washington 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
Black River - Mima Prairie Glacial Heritage Preserve (limited public access) is in Thurston County, Washington. Its approximate coordinates are 46.86475, -123.04195.
Check in at Black River - Mima Prairie Glacial Heritage Preserve (limited public access)
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.