This was my first visit since the 1980s. The two high points are located within the property of the Yards Creek pumped storage reservoir. At night, when electricity demand is low, water is pumped from the lower reservoir up to the higher reservoir on the mountain top. During the day, water is released downhill and generates hydroelectric power when it is most needed.
Visitors are welcome to hike the property.
To reach the area, drive about six miles northeast on NJ 94 from I-80. Reach a gatehouse at 2.3 miles, and check in with the guard. One could walk in from below the gate at other hours, but the guard advised that cars will be locked in after hours. Drive to the upper parking lot at a picnic area, and hike up the paved road. Just before it ends at the reservoir fence, bear left onto a dirt road that runs below the berm.