Bunker Hill Natural Area

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Bunker Hill cliff

Short trails along fields and through forests, with a 30-foot cliff near Ten Mile Run.

1.7 or 4.0 miles. Easy, mostly level. There are two rock-hop stream crossings over Ten Mile Run on the BROWN trail, one is potentially tricky.

Our two cents:

The cliff is interesting and may have cascades of icicles running down it in cold wet weather.

Nice option for short hikes in central NJ, but not something to drive far for. The stream crossing is not really hard, just potentially wet if the water is high.

Stick to hiking Sundays during hunting season, as the rules here are complicated.


Paper maps in the trail kiosk or print one ahead.


Not in any books we know of.

Parking: N40.42636° W74.57249°

Bunker Hill Road, Princeton (Franklin Township), N.J. 08540.

Alt lot: N40.44012° W74.55894°
903 Old Vliet Rd, Franklin Park, NJ 08823 (Corner of South Middlebush).

The cliff area can also be accessed (with no stream crossings) from a parking area on the other end of the trail system, technically in Franklin Park Natural Area. From that lot, take the BROWN trail to the cliff.


None. There are a variety of stores along Rt. 27; WaWa near the corner of Rt. 27 and Beekman Road.

Grassy trail and benches

Hike Directions:

0.0 – Start following YELLOW from the parking lot. Pass RED on the left, and then BLUE on the left.

Trail marker along grassy trail
Grassy trail

The trails are mostly mowed grass in this section.

0.3 – Keep straight on YELLOW as it splits off in a loop (return here later). Keep left, passing any unmarked paths that go off to the right.

0.5 – Turn RIGHT on to the start of BROWN.

Brown trail marker on path

Continue on BROWN, crossing Ten Mile Run stream on rocks.

Rock hop over a stream

0.7 – Arrive at a 30-foot cliff “towering” over the Ten Mile Run.

Cliff over 10 Mile Run

If it’s cold and there’s been rain, the water trickling down the cliff may be frozen:

Icicles running down a cliff

The cliff is better viewed from after the crossing, but it’s still plenty visible without crossing.

Crossing the Ten Mile Run in September:

Stream crossing on rocks

If the water is high or the rocks are icy then this crossing may be potentially tricky.

Note that big glob of slick ice on one rock. This was taken from the other direction, in December:

The cliff/crossing is a good turn around spot either way – retrace steps on BROWN back to YELLOW.

——————-Start of longer option——————————
Adds 2.3 miles. Instead of turning around now, cross the stream and follow BROWN as it continues to a parking area at South Middlebush Road, and then retrace.

Turn LEFT here and walk down the driveway just a bit, before veering right back onto the grass.

BROWN follows on mowed paths and field edges with a decent amount of sun exposure. It’s not especially thrilling but it’s a nice easy hike.
——————-End of longer option——————————

0.8 – Turn RIGHT onto YELLOW and follow it around to where it split earlier.

1.1 – Turn RIGHT, continuing on YELLOW.

1.2 – Turn RIGHT and start following BLUE.

[Alternate: Keep on YELLOW and go directly back to the parking lot].

Blue trail marker on path

1.5 – Turn LEFT to start following RED. [BLUE ends]

Turn RIGHT on YELLOW and back to the Bunker Hill Road lot.

Alternate: Adds 1.1 miles. Turn RIGHT (or it might have been more straight) and start following RED. Cross Bunker Hill Road.


RED travels through a sliver of woods sandwiched between houses, eventually ending up in someone’s back yard.


Where the trail turns into a backyard, turn around and retrace steps, following RED back to the parking lot.

To extend the hike even further, walk through the neighborhood on RED to link up with Griggstown Native Grassland trail system.

Hiked: 12/22/29. 2.2 miles, from Middlebush. With Butler Road hike.
Hiked: 9/4/17. ~4.5 miles.
Hiked: 3/22/15. in snow, 2.3 miles, from Middlebush.
Hiked: 11/30/14. Trail Blog: “Bunker Hill in Winter“.

1 thought on “Bunker Hill Natural Area”

  1. Did the Brown Trail from South Middle Bush Road today and this trail appears to be different from the one on the map.
    After crossing Ten Mile Run, the map shows that the Brown Trail soon meets up with the Yellow where we had planned to do it’s loop and then return on the Brown back to South Middle Bush. However, after TMR the Brown arrows took us off to the left in a counterclockwise loop and back eventually to TMR after crossing another small stream.
    Suggest taking 2 hiking poles as the streams are currently quite high and a number of the stepping stones are slippery.
    But it was still a nice hike – as are all the Franklin Township Trails.

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