Koolau Forest Reserve is one of the Hawaii 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
Koolau Forest Reserve is in Maui County, Hawaii. Its approximate coordinates are 20.82346, -156.16593.
Check in at Koolau Forest Reserve
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.