Turkey Mountain Shorter Loop via Blue, Green and Yellow Trails


This loop hike climbs a ridge to reach a viewpoint over Valhalla Lake and passes an old stone cabin, a scenic waterfall and the remains of a limestone quarry.

2 hours
3.3 miles
Route Type:
Allowed on leash
Views, Waterfall, Historic feature
First Published:

Daniel Chazin



View Pyramid Mountain Natural Historical Area in a larger map

Trail Conference volunteers maintain trails in this park.
Trailhead GPS Coordinates
Driving Directions

Take I-287 North to Exit 44 (Main Street, Boonton), and bear right onto Lathrop Avenue. Turn right at the stop sign onto Main Street, which is County Route 511 North. Proceed along Main Street for 0.3 mile, then turn right onto Boonton Avenue. Continue on Boonton Avenue, still designated Route 511, for 3.3 miles to the parking area for the Pyramid Mountain Visitors Center, on the left side of the road (the Visitors Center is opposite Mars Park, about 0.7 mile north of the intersection of Route 511 and Taylortown Road). Stop at the Visitors Center to obtain a free trail map (if the Visitors Center is closed, maps are available from the kiosk in the parking area)

Walk back to the entrance to the parking area and cross Boonton Avenue opposite Mars Court. At a sign for “Turkey Mt. 100 Steps Trail,” the Blue Trail begins. Follow this trail, which parallels the road at first, then crosses beneath overhead power lines. It bears right and follows a footpath through the woods, with the power lines on the right. At one point, it comes out at the power lines and then goes back into the woods. After climbing gradually, the Blue Trail again emerges onto the power line corridor and climbs more steeply. Soon, it ascends a series of rock steps, known as the “100 Steps,” with a west-facing view near the top of the climb. Continue along the Blue Trail as it follows the ridge of the mountain for a short distance, then turns right and descends through the woods to a T-junction. Here, the Blue Trail turns right, but you should turn left onto the Green Trail. The Green Trail soon bears right and reaches an outstanding viewpoint over Lake Valhalla to the south. From the viewpoint, the trail turns sharply left and soon arrives at another junction, marked by a cairn. You'll notice the remains of a small stone cabin alongside the trail. One of several cabins built atop Turkey Mountain, this particular cabin was never completed, the owner having abandoned it due to the construction of the adjacent power line. The Green Trail turns right at this junction and begins a steady descent. At the base of the descent, it turns left onto a woods road, joining the Red Trail. A short distance ahead, just before the woods road begins to climb steeply, the Red/Green Trail turns right, leaving the road, goes under the power line, and crosses a stream. Immediately past the stream crossing, the Red Trail leaves to the left, but you should continue ahead, following the Green Trail, which soon levels off as it heads through a valley. In another quarter mile, the Yellow Trail joins from the right. Follow the joint Green/Yellow Trail ahead until you reach North Valhalla Brook, with an attractive waterfall on the opposite side of the brook. This is a good place to take a short break. After enjoying the scenic view, retrace your steps on the joint Green/Yellow Trail, but when the two trails diverge, bear left, continuing to follow the Yellow Trail, which passes a large quarry pit on the left and crosses under power lines. After skirting more quarry pits and passing Botts Pond (below on the left), the Yellow Trail descends to cross a small stream and turns left onto a woods road. It follows the road for a short distance, then turns right, leaving the road, and climbs on a footpath to the top of a hill. Just beyond, the trail turns left and follows the rim of a long, narrow ravine, descending gradually. This ravine is a remnant of a quarry that operated in the mid-to-late nineteenth century, with the crushed rock being used to remove impurities from iron that was smelted in nearby Boonton. Although commonly referred to as "limestone," the rock extracted in this area is more correctly known as dolomitic marble. Towards the end of the ravine, the Yellow Trail bears right, crosses the ravine, and soon turns left onto a woods road. After crossing a footbridge over a stream, the trail continues along the road for a short distance, then (at a large cairn), it bears right, leaving the woods road, and begins to climb along the hillside. Soon, the White Trail begins on the left, but you should continue ahead on the Yellow Trail. In another third of a mile, the Blue Trail crosses. Continue ahead on the Yellow Trail, which is now level and surfaced with gravel. You'll pass two more trail junctions on the left -- first, with the White Trail, then with the Red Dot Trail -- and in half a mile you'll reach Boonton Avenue. Directly across the road are the visitors center and the parking area where the hike began.

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My family and I walked this trail today and were very disappointed to find that the "beautiful waterfall" mentioned in this description is pretty much non-existant. There was a shallow brook that was in the area mentioned, but no waterfall. That being said, there were a lot of areas we walked through that looked as if they used to be underwater. Also, we did hear what sounded like a decent waterflow elsewhere on the trail, but didn't actually investigate it. 


As you are presumably aware, the flow of water over waterfalls varies considerably, depending on recent precipitation.  In the last few weeks, we haven't had all that much rain, so there probably wasn't very much water going over the waterfall yesterday.  In light of the heavy rains we experienced this morning, it is likely that if you went back there tomorrow, you might find a lot more water going over the waterfall!