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Address: 1599 Doubling Gap Road Newville, PA 17241-9756
Park Manager: Jeff Johns
Contact Info: 717-776-5272
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Park Alerts ( 5 Alerts )

  • Flat Rock Trailhead road/parking lot and the main parking lot by Pavilion #1 are closed. Please use the equestrian parking lot to access the Flat Rock Trail via the Rattlesnake Trail. A new connector trail between Rattlesnake Trail and Flat Rock Trail has been built - please use this trail to go to Flat Rock.

  • Due to the campground project work, the Colonel Denning Campground will be closed for the entire 2018 camping season. Camping may be available at nearby state parks. Updates for availability will be made as the project is finalized. Thank you for your understanding.

  • Seasons and Hours: Contrary to the information on Google, Pennsylvania state parks are open every day of the year. Day use areas close at dusk. Park offices are open specific hours. Pools, beaches, and campgrounds are open specific seasons.

  • Drone Restrictions: To protect park resources, limit conflict with other park users, and avoid safety and privacy liabilities, unmanned aerial vehicles (UAV), remotely piloted vehicles (RPV) or unmanned aircraft systems (UAS), all commonly referred to as DRONES, are only permitted on designated flying fields in six remote controlled airfield parks (Beltsville, Benjamin Rush, Hillman, Lackawanna, Prompton, and Tuscarora). Drones are only permitted in other PA State Parks in very limited circumstances which require a special use permit.

  • General Firewood Quarantine: Pennsylvania Department of Agriculture has enacted a quarantine order for untreated firewood of any kind coming into the state. Any firewood brought into the state must be kiln dried, heat treated, fumigated, and/or USDA Certified.

    To protect the high quality and native character of our State Parks from exotic invasive species DCNR highly encourages all visitors to:

    • burn/buy locally cut firewood (within 25 miles)

    • BURN ALL firewood brought from another area. Do not leave it. Do not take it with you.

    • Encourage friends and neighbors not to move firewood

    • Do not remove firewood from a Spotted Lanternfly Quarantine Area. Contact the PA Department of Agriculture, www.agriculture.pa.gov and search on the keyword Spotted Lantern Fly for current quarantine information.

Park Description

Colonel Denning State Park, in north central Cumberland County, is in Doubling Gap, so named by the ā€œSā€ turn where Blue Mountain doubles back on itself. This feature may be seen from the Doubling Gap Vista in adjacent Tuscarora State Forest. The park has 273 acres of woodland and a 3.5-acre lake.

Things To Do ( 11 Available)

If the activity symbol is blue, this activity can accommodate people with a disability. Please contact the park at 717-776-5272 for more details.

Tap Camping for Campground maps.

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    • Colonel Denning Campground
      Season : 9 Months
      Restroom : Rustic
      Campsites : 52 Sites
      Electric : Yes
      Pets Allowed : Yes
      ADA Accessible : No
      Please be aware that only designated sites have electric, allow pets and are ADA accessible.
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    Education Programs

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    Sight Seeing

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    Scenic View

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    Cross Country Skiing

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  • picnic


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    • Doubling Gap Nature Trail
      Easiest 1.19 miles
      Beginning and ending at Doubling Gap Lake the trail is easy hiking with two low hills and about 1 mile in length. It is marked with blue blaze. This is a self-guiding nature trail with several interpretive waysides along its length explaining the natural history found around a mountain stream.
    • Old Doubling Gap Road Trail
      Easiest 0.22 miles
      This is the road trace of the Old Doubling Gap Road, which once passed through the park and into the gap. Trail blazes are red. Gated to vehicle traffic, approximately 2.6 miles of the road trace is an easy hike.
    • Rattlesnake Trail
      More Difficult 1.93 miles
      A 1 mile loop trail located entirely in the park and is marked with a yellow blaze. This trail begins along the main park road near the vehicle bridge. The trail is easy to moderate hiking, although a .4 mile section is rocky. This hike will take you through a mixed oak forest on the foothills of Blue Mountain
    • Flat Rock Trail
      Most Difficult 0.20 miles
      The trail is 2.5 miles long leading from the park to the top of Blue Mountain. The trailhead is at the footbridge next to the nature center. This is a moderate to rugged hike to the top of the mountain. At the top of the mountain, Flat Rock Trail joins Tuscarora Trail to the overlook. The trail blazes change from red to light blue while on the Tuscarora Trail. Flat Rock Overlook is a natural rock outcrop that affords a view of the great Cumberland Valley. Return to the park by Flat Rock Trail or choose a different trail back down the mountain.

Park Events

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Parks Nearby

If the activity symbol is blue, this activity can accommodate people with a disability. Please contact the park for more details.

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