Pvt. Sonsire Triangle is one of the New York 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
Pvt. Sonsire Triangle is in Kings County, New York. Its approximate coordinates are 40.71847, -73.95254.
Check in at Pvt. Sonsire Triangle
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.