The park has quite a bit of old growth Maple, Oak, Tulip Tree and Beech. A majority of the trees are 75 -100'. The lumber alone is worth a small fortune considering how rare this large quantity of old growth is.
I grew up with old growth forest up the block from where I lived in Queens. As odd as it sounds, Alley Pond Park has very old trees. The oldest tree in NYC, a Tulip Tree circa 1575, was walking distance from my house.