Twin Hollow is one of the Connecticut 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
Twin Hollow is in New Haven County, Connecticut. Its approximate coordinates are 41.34176, -72.66837.
Check in at Twin Hollow
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.