Cook Forest State Park

Cook Forest State Park: Pennsylvania’s Ancient Forest Cathedral

Deep in the heart of northwestern Pennsylvania, Cook Forest State Park protects one of the finest remaining old-growth forests in the eastern United States. Established in 1928 as Pennsylvania’s first state park created specifically to preserve a natural area, this 8,500-acre sanctuary shelters towering white pines and eastern hemlocks that have stood since before the American Revolution — some dating back to a drought and fire in 1644, making them nearly 400 years old.

The park’s crown jewel is the Forest Cathedral Natural Area, designated a National Natural Landmark in 1966. This primeval grove contains more white pine trees exceeding 150 feet in height than any other location in the northeastern United States. Walking among these ancient giants, with cathedral-like canopy arching overhead, creates a spiritual experience that draws nature lovers from across the country.

Park Facts at a Glance

The Forest Cathedral: Walking Among Ancient Giants

The Forest Cathedral Natural Area is the park’s most treasured feature and the primary reason Cook Forest was preserved. This extraordinary grove contains 11 distinct old-growth forest areas encompassing over 2,300 acres — one of the largest collections of virgin timber remaining in the eastern United States.

The ancient trees here are staggering in scale. Eastern white pines reach heights of 150 to 185 feet with trunk diameters exceeding 4 feet. Eastern hemlocks, many over 300 years old, create a dense understory canopy that filters sunlight into ethereal green shafts. Cook Forest is considered the finest remaining old-growth hemlock forest in the eastern U.S., as the hemlock woolly adelgid has devastated similar stands throughout the Appalachians.

The Longfellow Trail is the most popular route through the Forest Cathedral, a gentle 1.2-mile loop that passes beneath the park’s tallest specimens. Stand at the base of the Seneca Pine — one of the tallest trees in the northeastern United States — and look straight up through nearly 200 feet of trunk to understand why early visitors called this place a cathedral.

Top Trails in Cook Forest

With 47 miles of hiking trails and an additional 24 miles on the adjacent Clarion River Lands, Cook Forest offers exploration for every skill level. Multi-use trails accommodate hiking, biking, and horseback riding. In winter, many trails become cross-country ski routes through the snow-draped old-growth forest.

Clarion River: Wild and Scenic Waterway

The Clarion River, a nationally designated Wild and Scenic Waterway, flows through the heart of Cook Forest State Park. This pristine river offers some of Pennsylvania’s finest canoeing, kayaking, and tubing, with gentle Class I-II rapids that are perfect for families and beginners.

Several outfitters operate along the river, offering canoe, kayak, and tube rentals with shuttle service. Popular float trips range from 2-hour paddles to full-day adventures covering 10+ miles of scenic river. The water is remarkably clean and clear, making it excellent for swimming during summer months — though there are no lifeguards on duty.

Fishing is another major draw, with the Clarion River and its tributaries offering excellent smallmouth bass, musky, and walleye fishing. Trout stocking occurs in several streams within the park.

Camping and Lodging

The rustic cabins were originally built by the Civilian Conservation Corps (CCC) in the 1930s from American chestnut logs — a wood that no longer exists due to the chestnut blight. These historic cabins include beds with mattresses, a gas heater, and a refrigerator, but no running water. They represent a true back-to-basics wilderness experience.

History: Saving Pennsylvania’s Ancient Forest

Before European settlement, the Cook Forest region served as hunting grounds for the Seneca Nation of the Iroquois Confederacy. In 1826, John Cook became the first permanent American settler, establishing a homestead and sawmill along the Clarion River.

By the early 1900s, logging had devastated most of Pennsylvania’s original forests. In August 1910, businessman and conservation advocate M. Israel McCreight urged Anthony Wayne Cook — an heir to the Cook family lands — to preserve the remaining old-growth timber. The Cook Forest Association was formed in the 1920s, raising $200,000 with support from Gifford Pinchot, Chief of the U.S. Forest Service.

In 1927, the commonwealth purchased over 6,055 acres from the A. Cook Sons Company for $640,000, formally establishing Cook Forest State Park on December 28, 1928. It became Pennsylvania’s first state park dedicated to preserving a natural area — a milestone in American conservation history.

During the 1930s, the CCC built trails, roads, cabins, and the iconic Log Cabin Inn Environmental Learning Center, many of which remain in use today.

Seasonal Guide

Wildlife Watching

Cook Forest’s old-growth ecosystem supports an extraordinary diversity of wildlife. The towering trees and minimal understory disturbance create habitat found increasingly rarely in the eastern U.S.

• Birds: Pileated woodpecker, barred owl, red-shouldered hawk, scarlet tanager, cerulean warbler, wood thrush, and over 200 species total
• Mammals: White-tailed deer, black bear, bobcat, river otter, fisher, porcupine, flying squirrel
• Reptiles/Amphibians: Timber rattlesnake (rare), spotted salamander, red-spotted newt
• Fish: Smallmouth bass, rock bass, musky, walleye, brown trout (stocked)

The Clarion River corridor is particularly excellent for birdwatching, with bald eagles regularly spotted soaring above the water. Spring warbler migration (May) brings dozens of songbird species through the forest canopy.

Budget Planner

Nearby Attractions

• Clear Creek State Park — 10 miles south, swim beach, 53 campsites, managed jointly with Cook Forest
• Elk Country Visitor Center — 45 minutes, PA’s wild elk herd (800+ animals)
• Kinzua Bridge State Park — 60 minutes, 2,053-foot viaduct-turned-skywalk
• Allegheny National Forest — Adjacent, 500,000 acres of public land
• Gateway Lodge — Historic lodge near park entrance, fine dining and lodging

Safety and Tips

• Cell service: Very limited within the park — plan accordingly and download offline maps
• Ticks: Deer ticks carrying Lyme disease are common — check yourself frequently and use repellent
• Hunting season: Wear blaze orange during PA hunting seasons (fall-winter) even on marked trails
• Firewood: Do not bring firewood from outside the area — purchase locally to prevent spread of invasive species
• River safety: No lifeguards on the Clarion River — wear a PFD when paddling and check water levels before swimming

Frequently Asked Questions

Getting There

Cook Forest State Park is located along Route 36 in Cooksburg, Pennsylvania, at the intersection of Clarion and Forest Counties. The park is approximately:

• Pittsburgh: 95 miles northeast (1 hr 45 min)
• Erie: 85 miles south (1 hr 30 min)
• State College: 100 miles west (2 hrs)
• Buffalo, NY: 130 miles south (2 hrs 15 min)

Address: 113 River Road, Cooksburg, PA 16217

GPS may struggle in the park due to limited cell service. Download offline maps before arriving. The main entrance is well-signed from Route 36.

Written by

State Parks Team

Editorial Team

The America's State Parks Editorial Team has collectively explored 800+ state parks across all 50 states. Our park profiles are carefully researched using official state park data, verified visitor information, and first-hand observations from our writers and contributors. Each article is fact-checked against official sources and updated regularly to ensure accuracy. Our mission is to help every American discover the natural wonders in their own backyard.

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