Cook Forest State Park: Forest Cathedral, Fire Tower & Old Growth Hiking

Quick Facts

• Location: Clarion, Forest, and Jefferson Counties (Cooksburg, PA)
• Size: 8,500 acres
• Terrain: Old-growth forest, steep river valleys, rolling hills
• Top Trails: Forest Cathedral (1.2 miles), Fire Tower (short climb), Seneca Point
• Unique: National Natural Landmark, tallest trees in Northeast, Wild & Scenic River

Cook Forest State Park is not just a forest; it is a cathedral. Known as the “Black Forest” for the deep, cool shadows cast by its canopy, this park is home to the finest stand of old-growth white pine and hemlock in Pennsylvania.

Some of these giants are over 300 years old and tower nearly 200 feet above the forest floor. In 1927, this became the first Pennsylvania state park created specifically to preserve a natural landmark. Today, it offers a rare chance to walk among trees that were saplings before the American Revolution.

Why Hike Cook Forest?

The undisputed star here is the Forest Cathedral, a National Natural Landmark that contains trees of mind-boggling scale. You don’t just hike through it; you feel it. The sheer size of the timber creates a sense of awe that is hard to find anywhere else on the East Coast.

But Cook Forest is also about accessible adventure. You can climb an 87-foot fire tower for panoramic views, paddle the gentle, federally designated Clarion River, or stay in historic cabins built by the Civilian Conservation Corps. It is unparalleled for families and anyone who wants big nature without grueling hikes.

The Trails: Choose Your Cook Forest Adventure

If You Want the Cathedral: Forest Cathedral / Longfellow Trail

Forest Cathedral / Longfellow Trail:

• Distance: 1.2 miles loop
• Elevation: Minimal (50 ft gain)
• Time: 45 minutes to 1 hour
• Difficulty: Easy (flat, well-maintained)
• Trailhead: Forest Cathedral parking area (off PA Route 36)
• Best Time: Early morning (6:30-8:00 AM) for filtered sunlight, fall (September 25-October 10) for foliage
• The Draw: Walking among 300-year-old giants. Some hemlocks exceed 145 feet, and white pines reach nearly 200 feet

This is the must-do hike. The trail winds gently through the heart of the old growth. The forest floor is often quiet, cushioned by centuries of pine needles, while the canopy high above filters the sunlight into “god rays.”

Pro Tip: Go early in the morning or late in the afternoon. The low angle of the sun lighting up the massive trunks is a photographer’s dream.

If You Want the View: Fire Tower & Seneca Point

Fire Tower:

• Distance: 0.1 miles from parking
• Elevation: 87.5 ft climb (vertical)
• Time: 15-20 minutes (including climb)
• Difficulty: Easy walk, strenuous climb (87.5 feet up)
• Trailhead: Fire Tower parking area (off Fire Tower Road)
• Best Time: Fall (September 25-October 10) for foliage views, clear days for 15-20 mile visibility
• The Draw: 360-degree views stretching 15-20 miles. Built in 1929
• Warning: If you’re afraid of heights, skip the climb. The tower is safe, but it sways in the wind!

Seneca Point:

• Distance: 0.2 miles from Fire Tower parking
• Elevation: Minimal
• Time: 10 minutes
• Difficulty: Easy
• Best Time: Sunset for golden hour views of Clarion River Valley
• The Draw: A massive rock outcrop overlooking the Clarion River Valley from 1,600 ft elevation
• Bonus: Look for the “Indian mills” - bowl-shaped depressions in the rock used by indigenous peoples for grinding grain

If You Want the River: River Trail & Clarion River

River Trail:

• Distance: Varies (runs along the river, 2-3 miles one-way)
• Elevation: Minimal
• Time: 1-2 hours
• Difficulty: Easy (flat)
• Trailhead: Multiple access points along PA Route 36
• Best Time: Spring (April-May) for high water, summer (June-August) for swimming
• The Draw: A scenic, relaxing walk along the banks of the Wild & Scenic Clarion River

Clarion River Activities: The Clarion is gentle and beginner-friendly, perfect for families.

• Paddling: Rent a canoe or kayak from Pale Whale Canoe Fleet or Cook Forest Canoe Livery
• Tubing: A popular way to cool off on hot summer days
• Swimming: There are designated areas to take a dip

If You Want Wilderness: North Country Trail

North Country Trail (NCT):

• Distance: Runs through the park (National Scenic Trail, 4,800 miles total)
• Elevation: Varies
• Time: Multi-day backpacking
• Difficulty: Moderate to strenuous
• Access: Multiple trailheads throughout park
• Best Time: Fall (September-October) for cooler temps and foliage
• The Draw: Long-distance hiking through diverse terrain

For those wanting more miles, the North Country Trail passes right through the park, connecting Cook Forest to the broader Pennsylvania Wilds.

The Forest Cathedral: Pennsylvania’s Tallest Trees

The Forest Cathedral isn’t just a name; it’s a designation. This 315-acre area is a National Natural Landmark. The trees here - Eastern Hemlock, Eastern White Pine, White Oak, and American Beech - are survivors. They escaped the heavy logging of the 19th and early 20th centuries thanks to the Cook family, who preserved them.

• Scale: White pines here can reach 200 feet, rivaling the height of a 20-story building
• Age: Many are 300-400 years old
• Significance: One of the finest old-growth forests in the Northeast

The Fire Tower: 360-Degree Views

Built in 1929 by the state Bureau of Forestry, Fire Tower #9 was originally a tourist attraction before being used for fire detection. It has since returned to its roots. Climbing the open metal stairs to the top cab gives you a bird’s-eye view of the rolling plateau that characterizes this part of Pennsylvania.

On clear days, you can see 15-20 miles in every direction. The tower sways slightly in the wind - it’s perfectly safe, but not for those with vertigo.

Photography Tips

Best Forest Cathedral Photography: Early morning (6:30-8:00 AM) for “god rays” filtering through the canopy. Wide-angle lens (16-35mm) captures the towering scale. Shoot in spring (April-May) for wildflowers on forest floor.

Best Fire Tower Photography: Shoot from below with wide-angle lens to emphasize height. Climb for 360-degree panoramas. Fall (September 25-October 10) offers best foliage views.

Best River Photography: Clarion River in early morning or late afternoon for soft light. Slow shutter speed (1-2 seconds) creates silky water effect. Include canoes/kayaks for scale.

Best Winter Photography: Forest Cathedral after fresh snowfall (December-February). Cross-country ski tracks add foreground interest. Shoot in overcast light to avoid harsh shadows.

The Clarion River: Wild & Scenic

The Clarion River was once heavily polluted by industry but has made a remarkable recovery. Today, it is a designated Wild & Scenic River, teeming with bald eagles, otters, and fish. Its gentle current makes it one of the best paddling rivers in the state for beginners.

The 10-mile stretch from Cook Forest to Clear Creek State Park is particularly scenic and popular for half-day or full-day canoe trips.

Camping at Cook Forest

Ridge Campground

Located on a wooded ridge, this campground offers 210 sites for tents and trailers.

• Sites: 81 with electric hookups, 129 without
• Pricing: $19-$28/night
• Season: Mid-April to mid-October
• Amenities: Pet-friendly sites available, modern restrooms, showers
• Booking: Reserve via PA State Parks reservations

Cabins

Cook Forest is famous for its cabins.

• River Cabins: Historic, CCC-built cabins located right along the Clarion River. $60-$120/night.
• Indian Cabins: Smaller, rustic cabins perched on the hillside. $50-$90/night.
• Booking: Reserve 11 months in advance via PA State Parks reservations

Note: These book up months in advance, especially in summer. Plan ahead.

What You Need to Know Before You Go

Nearby Hubs

• Cooksburg: The main “town” (population ~250). Mostly just the park and river outfitters. Cook Forest Conservancy visitor center.
• Clarion: University town 20 minutes south. Full services, gas, groceries, restaurants.
• Leeper: 10 minutes from park. Famous for Vowinckel Hotel (legendary portions and history).

The Cook Family Legacy

John Cook settled here in 1826 to build a timber empire. But grand-nephew Anthony Wayne Cook recognized the unique value of the surviving old growth. The family fought to preserve the “Forest Cathedral” rather than log it, leading to the state purchasing the land in 1927.

This was the first Pennsylvania state park created specifically to preserve a natural landmark - a groundbreaking conservation decision.

CCC Legacy

During the Great Depression, the Civilian Conservation Corps (CCC) transformed the park. They built trails, picnic pavilions, and many of the log cabins you can stay in today.

Winter Activities

Don’t write off Cook Forest in winter.

• Cross-Country Skiing: Gliding through the silent, snow-covered Forest Cathedral is a magical experience. Trails are not groomed but well-marked.
• Snowshoeing: All trails remain open for snowshoeing
• Ice Skating: There is a skating pond near the River Cabins (weather permitting)

Nearby Attractions

• Sawmill Center for the Arts: Located in the park, featuring local crafts and theater performances
• Clear Creek State Park: 10 miles downriver (connected by Clarion River). Great for extended paddling trips.

Best Time to Visit

• Spring (April-May): Wildflowers like trillium bloom on the forest floor before the canopy leafs out. River is high from snowmelt. Best dates: April 15-May 15 for wildflowers.
• Summer (June-August): The river is the place to be. It gets busy, but the cool forest offers relief. Best dates: June-July before peak heat.
• Fall (September-October): Spectacular foliage. The hardwoods turn vibrant colors against the deep green of the pines and hemlocks. Best dates: September 25-October 10 for peak color.
• Winter (December-March): Peace and quiet. Perfect for cross-country skiing and cozy cabin stays.

FAQ

How tall are the trees in the Forest Cathedral?
Some hemlocks exceed 145 feet, and white pines reach nearly 200 feet. They are among the tallest trees in the Northeastern U.S.

Is the Fire Tower scary to climb?
It can be if you have vertigo. It’s perfectly safe, but at 87.5 feet, you will feel it sway in the wind.

Is the Clarion River good for beginners?
Yes. It is generally shallow and slow-moving in this section, making it ideal for families and first-time paddlers.

What’s the best hike for first-timers?
The Forest Cathedral / Longfellow Trail. It delivers maximum wow factor with minimal effort.

Explore More

Ready to walk among Pennsylvania’s tallest trees? Start with the Forest Cathedral Trail, climb the Fire Tower for panoramic views, and paddle the gentle Clarion River.

• Compare this to Ricketts Glen for another old-growth gem with waterfalls
• Check out the Allegheny National Forest for vast wilderness just to the north
• See the full PA State Parks list for more adventures across the state