1.7 Miles / 2.7 km
Time to Hike:
~51 minutes
Surface Type:
Horatio Colony Nature Preserve
Keene, New Hampshire
42.928813, -72.324324
May 13, 2019
May 14, 2019

The Red Diamond Trail at the Horatio Colony Nature Preserve in Keene, New Hampshire is a moderate 1-.7-mile loop trail that heads up to a lookout point with views of Keene below.

Trail name: Red Diamond Trail

Location: The Horatio Colony Nature Preserve. The Trails are located roughly a mile outside of the city of Keene, NH. The trailhead parking is located on Daniels Hill Road in Keene. From Keene, follow Route 9 West toward Brattleboro Vermont. Daniels Hill road will be on the left. The parking area is about an 1/8th of a mile on the left side of the road.

Allowed activities: walking, hiking, geocaching, birdwatching, photography, nature study

Forbidden activities: No hunting, no fishing, no trapping, no motorized vehicles, no mountain biking, no overnight camping, no overnight parking, and no fires.

Hours: The hiking trails are open daily from dawn to dusk.

Fees: There is no charge to park or use the trails.

Parking: There is limited parking at the base of the road that leads to the trailhead. If a group is planning to use the trails, they are asked to call ahead and request the gate be unlocked to allow for access to the upper parking area, otherwise the gate will remain locked. Contact the Nature Preserve Manager at 603-283-2115 or the museum at 603-352-0460 prior to visiting.  Parking on Daniels Hill Road is not allowed.

Pets: Dogs are allowed on the trails as long as they are leashed and waste is carried out with the hiker.

Accessibility: The trails here are not wheelchair accessible. The road to the trailhead is very steep and rocky. Depending on the season, there could be leaf litter, or mud causing the trail to be slippery. The wooden foot bridges that cross over wet areas or streams are sturdy, but can be uneven thanks to winter frost heaves. Hikers doing this loop will need to be able to ford small streams. Hikers should be able to walk on uneven surfaces or over downed trees without difficulty. Many areas of the trail have roots along the path.

Sanitation: There are no restrooms or trash receptacles. Please carry out your trash.

Length:  The Red Diamond Trail is a moderate to strenuous 1.7 mile trail that loops.

Trail information:  There is one main trailhead at this nature preserve.  Although the hike to the Kiosk is only 1/10th of a mile from the parking area, it is a 7% grade. Other locations along the trail have as much as a 22% grade. At the trailhead Kiosk, hikers will find information about the trails posted, as well as maps and interpretive trail guides that will explain the points of interest noted along the trails. The booklets and maps can be borrowed to take along the hike and then returned. There is also a sign in sheet for hikers. At the time of our hike there were no maps and only one booklet for hikers to use. The Red Diamond Trail is marked by Red Diamond shaped Blaze markers on trees along the trail. The trail is very well maintained. Besides seeing the blazes, hikers will notice numbered wooden markers that are painted red. These markers correlate to the points of interest that are explained in the booklet borrowed from the trailhead Kiosk. Besides trail blaze markers, markers with arrows or trail information can be found. Markers are posted high enough to see in winter snow pack.  Hikers can print a map before heading out by going to the link below.


There is a historical cabin on the way to information trailhead kiosk. Visitors are allowed to enter and read posted information within, about the Colony family, the Nature Preserve and the flora and fauna they will find inside the parks boundaries. Farther along the Red Diamond Trail, are the remains of the foundation of the “Tip Top house”, a summer cabin that was built in the 1800’s and destroyed by a hurricane in 1938. The view from this vantage point of the City of Keene below is truly magical. There are a four trails that be accessed around the midpoint of the Red Diamond Trail. Ridgeline Trail is the first trail that branches off of the Red Diamond Trail and the markers there are white. The Ridgeline Trail is an “out and back” trail. The Ridgeline trail starts in the City of Keene and then crosses over into the Town of Swanzey NH. The other 3 trails are all in Swanzey NH. Black Lead Mine Trail is a small trail that juts off of the Ridgeline Trail and then connects back to the Ridgeline Trail. Black Lead Mine Trail blaze markers are yellow. At the end of the Ridgeline trail is a junction plaza with the Slickenslide trail heading off to the left, and Bailey Brook Trail heading slightly off to the right. Slickenslide Trail has Blue blaze markers and Bailey Brook has Yellow Blaze markers. Both the Slickenslide and the Bailey Brook Trails are “out and back” hikes. Bailey Brook Trail terminates at Forest Avenue in Swanzey NH. It is not recommended to start a hike from this point, as Forest Avenue is not easily accessible and there is no parking at the end of this trailhead.  Since there are these four other trails branching from the Red Diamond Trail, there are numerous possibilities for creating longer or shorter hikes. This trail system is part of the Wantastiquet-Monadnock Trail that runs from Brattleboro Vermont to Mount Monadnock, some 40 miles away. This is marked by Blue and White Diamond Blaze markers.

Explore 72 trails near Keene, NH
  1. Parking

    42.928813, -72.324324
  2. Main Trailhead

    42.92871, -72.32419
Explore other trail routes for this hike, added by the MyHikes Community via Trip Reports.
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Ticks - Lyme Disease More Info (CDC)
Poison Ivy/Oak



Blaze Color


Blaze Dot

639 '

Total Change
668 '

642 '


Photo Albums

1 Trip Report

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Write-up by:
2Adamswalking user profile picture
1.7 miles / 2.7 km
Trail added
May 13, 2019
Hiked on
May 12, 2019
Updated on
May 14, 2019

Weather Forecast

In Keene, NH

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