I know that area well! It's old farmland. first cleared by the Allen family of Allenwood in the early 1700s . There were houses on Allenwood Lakewood rd. as recently as the 1970s and a garage/ gas station. The greater portion was used as borrow pits to build up the Brick reservoir embankments. A lot of good trails now criss-cross the area, along with the giant Silvi plant. If you go as far east as you can, to Ridge road, there's some old farm house ruins just north of the parking lot on your left.