Upon entering the trail at Trailhead 1 are the foundation ruins of the historic Hammonassett paper mill and its dam system. The trail then heads north, close to the west bank of the river through second-growth forests. Tree species commonly encountered are oaks (red, black, white and chestnut), beech, black and yellow birches, white ash, and red maple. Additionally, a few sugar maples and sassafrass occur and some large sycamores may grow along the river banks. Occasional hemlock snags still stand— reminders of their vulnerability to the effects of the gypsy moth defoliation in the 1970s and ‘80s.
This flood plain once stored large quantities of water in a “lake” behind the mill dam downstream which helps to prevent erosion of the river bank. In springtime, marshmarigolds, columbine, and trillium are present along the river's edge.
The trail continues north and passes a group of chestnut oaks, a species common to dry sites. Several stone walls mark old field borders, indicating that the forest here developed on land formerly tilled or pastured.
The trail follows the river, and at about 0.6 mile, divides; the right branch follows the river, while the left proceeds uphill, and then rejoins the main trail. Continuing along the river offers more views of the flood plain. Along the cool, moist base of the hill to the west, the trail passes through a stand of yellow birch, hemlock (now dead), beech and red oak.
The trail soon curves to the left, and then swings sharply right where it crosses a stream (about 0.7 mile from Trailhead 1). At this point, the loop section trail heads south and the main trail continues right for another 0.2 mile to Trailhead 2 at Wickford Place. The main trail follows an old logging road, then goes right along steep slopes, and crosses some temporary stream beds, before climbing upslope and along a narrow right-ofway between private residences to the Wickford Place cul-de-sac and Trailhead 2. The loop trail provides sightings of red-shouldered hawks and many woodpeckers. Barred owls also nest in this area. This section of trail (1.0 mile round trip) passes south along the small stream and then ascends a knoll past a group of white pines before it descends to the stream and the base of the loop. The trail follows to the right and then ascends to mid-slope.
About 800 feet from the loop base, a spur trail to the right follows an old road bed up along a narrow right-of-way until meeting Trailhead 3 on Hammonasset Meadows Drive.
The loop trail gradually ascends to slope crest and along a stone wall before swinging first east and then sharply north. Here, a short spur trail leads to Trailhead 4 on Greenhill Road over Northeast Utility property.
The trail then descends and follows alongside big oaks with large, low, widespreading branches indicating that these trees developed when this area was open. Continuing back on to the loop leads to the junction with the main trail, toward Trailhead 1 with the red-cedar knoll on the right. Redcedars and black cherry trees were seeded here by birds when this was a grassy knob. From the knoll crest just beyond the red cedars, great views exist of the river and its flood plain below, especially in fall, winter and early spring. Approaching the old dam site from this direction affords a good view of the hills that form both sides of the river and narrow the flood plain.
This mill is included in the National Register of Historic Places. It was built around 1865 to produce straw board, a product used for making boxes which was popular during an interim period between the heydays of rag-based and wood pulp-based papers. The mill was successful until its closing in 1890. In later years, the site was occupied by a lumber operation. The site includes components on both sides of the river. On the east side, in Killingworth, are the remains of a stone dam 20 feet long, six feet wide, and 14 feet high; on the west side, in Madison, the remains of the mill.
The above-ground remains include the fieldstone ruins of the mill complex, stone-lined head and tailraces, the dam and at least two associated structures. Large fieldstone footings imbedded with threaded iron rods, presumably for machinery, are found in three areas. Deep pits in two buildings suggest possible vat locations. There is no wheel pit; the mill was powered by water-driven turbines, the exact locations of which are not apparent.
Trailhead 1 is located on Fawn Brook Circle near the junction with Green Hill Road. Trailhead 2 is located at the cul-de-sac of Wickford Place. Trailhead 3 is on Hammonassett Meadows Drive near the trailhead. There is parking available at trailheads 1-3. The park is located at 28 Fawn Brook Cir, Madison, CT.
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