Joseph E. Ibberson Conservation Area
🏆🏆🏆🏆🏆 Mountain Wilderness — 350-acre conservation area on Peter’s Mountain — protecting old-growth hemlock ravines and one of the finest wildflower displays in Pennsylvania
Joseph E. Ibberson Conservation Area protects 350 acres on the southern slope of Peter’s Mountain overlooking the Susquehanna River — one of the most botanically rich sites in central Pennsylvania. The conservation area features old-growth hemlock ravines, mountain laurel thickets (Pennsylvania’s state flower!), and over 100 species of wildflowers. Peter’s Mountain is part of the Blue Mountain ridge — the first significant ridge of the Appalachian Mountains west of the Susquehanna. The ridge was the colonial frontier boundary for decades — the Proclamation Line of 1763 ran along it, marking the western limit of legal English settlement.
Visitor Information
| Detail | Information |
|---|---|
| Location | Dauphin County, PA (Peter’s Mountain!) |
| Entry Fee | Free |
| Size | 350 acres — 100+ wildflower species! |
| History | 1763 Proclamation Line boundary! |
About Ibberson
Joseph E. Ibberson Conservation Area in Dauphin County protects 350 acres of pristine old-growth forest on the slopes of Peters Mountain, just 20 miles from Harrisburg. The conservation area is named for a state forester who championed old-growth preservation. The undisturbed forest features massive hemlocks, white pines, and hardwoods — a living example of what Pennsylvania’s forests looked like before the devastating clear-cuts of the 1800s timber era.
Things to Do
Hiking through genuine old-growth forest (rare in Pennsylvania — over 99% was clear-cut by 1900), photography of massive trees, birdwatching for forest-interior species, and reflecting on Pennsylvania’s timber history and forest recovery.
Insider Tips
Appalachian views: Ibberson Conservation Area sits atop Second Mountain in Dauphin County — part of the Ridge and Valley Province with views across the Susquehanna River Valley. Pro tip: The conservation area was a private estate gifted to the state — the meticulously maintained grounds and mature forest feel like a private park. Hawk Mountain nearby: The famous Hawk Mountain Sanctuary — the world’s first refuge for raptors — is nearby on the same mountain ridge.
Best Time to Visit
Fall: Raptor migration and ridge foliage. Spring: Wildflowers on the mountain. Summer: Cool ridge hiking. Winter: Clear valley views.
Frequently Asked Questions
What is Hawk Mountain?
Hawk Mountain Sanctuary (1934) was the world’s first refuge for birds of prey — established when shooting migrating hawks from the ridgeline was common “sport.” Today, 18,000+ raptors (eagles, hawks, falcons) are counted annually during fall migration. Hawk Mountain proved that raptors have ecological value — it helped inspire the raptor protection movement worldwide.
🌺 Visit Ibberson Conservation Area
100+ wildflower species — colonial frontier boundary of 1763!
