Indian Brook Assemblage of the Nature Conservancy
Click the gray area of either map for a detailed view
Mildred E. Grierson Memorial Wildlife Sanctury
The Mildred E. Grierson Sanctuary, Marian Yarrow Nature Preserve and the Mt. Holly Nature Preserve comprise the Indian Brook Assemblage of over 100 acres owned by the Nature Conservancy. They are important as a wildlife refuge and as part of the NYC Watershed system. Because of the sensitive flora and fauna in the area, hikers should keep to the well marked trails.
The five acre pond in the Mildred E. Grierson Memorial Wildlife Sanctury can be observed from Todd Road where there is a foot path entrance. These spring fed ponds and wetlands are a haven for migratory water fowl and other bird life. They are also populated with fish, reptiles, and turtles. Beyond the ponds the trail leads up a steep hill to 13 acres of hard wood forests and a stone wall which marks the boundary of the Marion Yarrow Preserve. Trail is .5 miles
Level: Beginning level; a steep switchback up ot the Yarrow Preserve can be slippery
Derections: the sanctury entrance is on Todd Road, 100 yards east of Mount Holly Road. Park on the roadside. Can be accessed from the orange trail of the Yarrow Preserve.
The Marion Yarrow Preserve entrance is on Mt. Holly Road. Next to the small parking area there is a box containing maps. Loop trails, (yellow, red, white and blue) lead to Hidden Lake, a twenty foot waterfall and a wooded marshland. Trail length is 2 miles.
Directions: The preserve entrance is on the east side of Mount Holly Road .3 miles south of Todd Road & .3 miles north of the Holly Hill Lane intersection.
The Mount Holly Preserve is 51 acres. Indian Brook flows along the eastern boundry into the Cross River Reservoir. Trail lenght is 1.5 miles
Level: Moderate with steep areas
Directions: the preserve entrance ison Mount Holly Road East, 1 mile from the intersection with Mount Holly Road park on the road. There is also an entrance on Mount Holly road with no parking.