Top 10 Caves in National Forests

The underground world is fun to explore, especially when you get to bring your own flashlights and go at your own pace.  That is the only option in most National Forests, with a few notable exceptions for guided tours found on this list.  It was the opposite case when I ranked the Top 10 Caves in National Parks back in 2019 (click here to see all our Top 10 Lists).

If you or someone you love are interested in visiting the 155 National Forests, our travel guidebook Out in the Woods makes a great gift!

10. Subway Cave in Lassen National Forest (California)

There are interpretive signs inside this lava tube, including one explaining lavacicles

9. Fulford Cave in White River National Forest (Colorado)

This one and Spring Cave are only accessible April 16 through August 14 and require registration

8. Lava River Cave in Coconino National Forest (Arizona)

This is the first lava tube I ever explored while I was a college student in Flagstaff

7. Mammoth Cave in Dixie National Forest (Utah)

Ice Cave is another option to visit in southwest Utah

6. El Capitan Pit in Tongass National Forest (Alaska)

Prince of Wales Island is mostly karst and includes this deepest pit in the U.S., plus Sophia’s Sinking Stream Cave and Meow Cave

5. Cave of Bells in Coronado National Forest (Arizona)

This cave has a lock on its entry gate, as does Onyx Cave, but are accessible with permission

4. Boyden Cavern in Sequoia National Forest (California)

Guided tours are offered in this show cave outside Kings Canyon National Park

3. Ape Cave in Gifford Pinchot National Forest (Washington)

Timed-entry permits ($2 per vehicle) are required to explore this long lava tube in Mt. St. Helens National Volcanic Monument, but not for Guler Ice Caves

2. Blanchard Springs Caverns in Ozark National Forest (Arkansas)

Limestone springs and caves are all over this region, including this show cave with guided tours

…and finally the #1 cave in a National Forest:

1. Minnetonka Cave in Caribou National Forest (Idaho)

Tickets for a guided tour are required to drive up the narrow road to the parking lot, plus check out nearby Paris Ice Cave 

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Honorable Mentions

Jot Dean Ice Cave in Shasta National Forest (California)  

I stumbled upon this one while visiting Sáttítla Highlands National Monument, also home to lava tubes in Giant Crater

Resurgence Cave in Daniel Boone National Forest (Kentucky)

All caves around here are currently closed to protect bats, including the ones behind Moonshiners Arch

Wind Cave in Cache National Forest (Utah)

Not very dark on this cliffside, but it is a great spot for photographs

Wave Cave in Tonto National Forest (Arizona)

Another one that is more of an amphitheater than a cave, but famous for photos riding the wave

Darby Canyon Wind Cave in Targhee National Forest (Wyoming)

I had not heard of this cave just west of Grand Teton National Park

Sandia Cave in Cibola National Forest (New Mexico)

Located near Albuquerque, it features a unique metal spiral staircase to the entrance

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Mt. Hood National Recreation Area

Mt. Hood National Recreation Area

Oregon

Managed by U.S. Forest Service, Pacific Northwest Region

Established 2009

34,550 acres

Website: https://www.fs.usda.gov/r06/mthood/recreation/trails/surveyors-ridge-trail-688

Overview

Mt. Hood National Recreation Area was established within Mt. Hood National Forest on March 30, 2009 through legislation that expanded and established many Wilderness areas in Oregon and throughout the U.S.  It is divided into three non-contiguous units: the northernmost Shellrock Unit, easternmost Fifteenmile Unit, and the largest Mt. Hood Unit located south of (and not including any portion of) the volcano.  Bicycles are prohibited in designated Wildernesses, so this National Recreation Area was set aside specifically for mountain bikers (and shared by other trail users). 

Highlights

Frog Lake, Twin Lakes, Surveyor’s Ridge Trail, Pacific Crest National Scenic Trail

Must-Do Activity

The Mt. Hood Unit incorporates Wilderness areas and has a network of trails, including a stretch of the Pacific Crest National Scenic Trail.  It is easily accessed from Highway 26 at the Frog Lake Sno-Park/Trailhead (fee).  Frog Lake and Lower Twin Lake are short hikes from this large parking area, while Upper Twin Lake is a further distance with more elevation gain required.  There are many backpacking campsites situated along the shorelines of these lakes.  The Shellrock and Fifteenmile Units are in second-growth forests that have single-track trails popular with mountain bikers.  The best cycling areas in the Mt. Hood Unit are in the east along the Gunsight Trail and around Bonney Meadows and the Boulder Lakes.

Best Trail

Surveyor’s Ridge Trail ascends 1,000 feet up to the top of Bald Butte for great views of Mt. Hood, Mt. Adams, Mt. St. Helens, and Mt. Rainier on clear days.  With both a north and south trailhead it works well with a two-car shuttle.  Fifteenmile Trail is a challenging bike route that follows the Wild and Scenic Fifteenmile Creek and connects to Cedar Creek Trail to form a 12.7-mile loop with 2,273 feet of elevation gain.

Photographic Opportunity

Pacific rhododendron and beargrass were in bloom in mid-June near the Frog Lake Sno-Park/Trailhead.

Peak Season

Summer

Fees

$10 (or a Northwest Forest Pass) for Frog Lake Day Use Area located adjacent to Frog Lake Campground, but Frog Lake Sno-Park/Trailhead off Highway 26 is only $5 and accepts America the Beautiful passes (plus a State of Oregon Sno-Park permit is required November 1 through April 30).

Road Conditions

Frog Lake Sno-Park/Trailhead sits where the Pacific Crest National Scenic Trail crosses Highway 26 and can be reached by taking paved roads to the large dirt parking lot.  Surveyor’s Ridge Trail complex has easy access from Forest Roads (FR) 44 and 17.  Fifteenmile Trail leaves from the campground, accessed by traveling eight miles on FR 44, then two miles on FR 4420 and two miles on FR 2730, narrow roads with a maximum vehicle length of 16 feet.

Camping

Fifteenmile Campground is first-come, first-served, while Frog Lake Campground takes reservations, as does the popular Trillium Lake Campground outside the National Recreation Area.

Related Sites

Columbia River Gorge National Scenic Area (Oregon-Washington)

Newberry National Volcanic Monument (Oregon)

Mt. Hood National Forest (Oregon)

Malheur National Forest (Oregon)

Nearest National Park

Mount Rainier

Explore More – How large are the Clackamas, Lower White River, and Roaring River Wilderness areas created in Mt. Hood National Forest in 2009?

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William Howard Taft National Historic Site

William Howard Taft National Historic Site

Ohio

Managed by National Park Service

Established 1969

3 acres

Website: nps.gov/wiho

Overview

William Howard Taft was the nation’s 27th President and 10th Chief Justice of the U.S. Supreme Court, the only person to hold both positions in U.S. history.  Taft was born on September 15, 1857, in this house in Cincinnati, the city where he attended law school after graduating from Yale (where he later served as a professor).  Taft was promised a Supreme Court nomination by President William McKinley when he sailed for the Philippines in April 1900 where he would stay as Civil Governor until December 1903.  After McKinley’s assassination, he would have to wait for his Supreme Court seat until 1921.  His mother sold the Cincinnati house in 1899 and it was structurally altered and turned into apartments, so the National Park Service completed extensive restorations.  Taft’s son Robert Alphonso Taft served as a U.S. Senator representing Ohio, and his father had been Secretary of War and U.S. Attorney General. 

Highlights

Guided tour of restored mansion, museum, film

Must-Do Activity

Visitors can park at the Taft Education Center next to the house where there are museum exhibits, a bookstore, and a film screening room.  Guided tours that last 30 minutes are the only way inside the house, a Greek Revival design that is decorated with Victorian-era furnishings. 

Best Trail

None

Photographic Opportunity

The museum has an audio-animatronic figure of Taft’s son Charles Phelps Taft II wearing fishing gear and telling stories about members of the Taft family. 

Peak Season

Spring and fall

Hours

https://www.nps.gov/wiho/planyourvisit/hours.htm

Fees

None

Road Conditions

Free paved parking is available at this site that is easily accessible from Interstate 71.

Camping

North of Cincinnati, Hueston Woods State Park offers 490 campsites, 59 cabins, and a lodge.  The scenic Hocking Hills State Park has 172 campsites (reservations recommended) and is one of the most popular places to camp in Ohio. 

Related Sites

James A. Garfield National Historic Site (Ohio)

Charles Young Buffalo Soldiers National Monument (Ohio)

Dayton Aviation Heritage National Historical Park (Ohio)

Hopewell Culture National Historical Park (Ohio)

Nearest National Park

Mammoth Cave

Explore More – What was William Howard Taft’s position in Theodore Roosevelt’s Presidential Cabinet?

Mt. Baker National Recreation Area

Mt. Baker National Recreation Area

Washington

Managed by U.S. Forest Service, Pacific Northwest Region

Established 1984

8,473 acres

Website: https://www.fs.usda.gov/r06/mbs/recreation/mt-baker-national-recreation-area

Overview

Part of Mt. Baker-Snoqualmie National Forest, Mt. Baker National Recreation Area was set aside to provide a place for snowmobile use on the 10,781-foot volcano’s south slope.  Snowmobiling is restricted to certain areas outside the designated Wilderness and requires a minimum snow depth of two feet.  Mt. Baker is an active stratovolcano that last had a major eruption 6,700 years ago, but experienced hydro-thermal explosions in 1840 and 1880 that led to dangerous lahars.

Highlights

Park Butte Lookout, Railroad Grade Trail, Scott Paul Trail, Pacific Northwest National Scenic Trail

Must-Do Activity

North of Baker Lake, Park Butte Trailhead is the main access point for Mt. Baker National Recreation Area and has a large parking lot with vault toilets and trash cans.  Park Butte Trail immediately enters groves of large western hemlock and Alaska yellow-cedar trees.  Taking the split to the right for the Scott Paul Trail creates a 7.5-mile loop, which remains heavily snow covered into mid-June.  In addition to snowmobiling, other activities include snowshoeing, skiing, picking huckleberries, and climbing to the summit of Mt. Baker on the Coleman Glacier and Easton Glacier routes.  Horseback riding is allowed on Bell Pass, Elbow Lake, Park Butte, and Ridley Creek Trails.

Best Trail

Railroad Grade Trail splits off Park Butte Trail and quickly climbs up to a lateral glacial moraine that offers incredible views of Mt. Baker on clear days.  It is used by mountain climbers making their way to the summit of the volcano. 

Photographic Opportunity

It is 7.9 miles out-and-back with 2,093 feet of cumulative elevation gain to the Park Butte Lookout, a historic structure built in 1932 that is maintained by Skagit Alpine Club volunteers.  It is technically just inside the boundary for Mt. Baker Wilderness.

Peak Season

Summer

Fees

$5 day use (or America the Beautiful pass) at Park Butte Trailhead from May 1 through October 31, and a Washington State Sno-Park permit required the rest of the year.

Road Conditions

Park Butte Trailhead is accessed by taking the pothole-riddled Forest Service Roads 12 and 13 uphill for 8.9 miles.  Access to Elbow Lake Trailhead and Ridley Creek Trailhead also require long dirt road drives.

Camping

There are a couple designated free hiker campsites at Park Butte Trailhead with limited options for dispersed car camping situated along the road up to it.  Backpacking is popular in this area, especially inside the historic 1932 Park Butte Lookout, which is available on a first-come, first-served basis.  There are flat tent pads built at Cathedral Camp, High Camp, Railroad Camp, and Mazama Park Horse Camp in the backcountry.

Related Sites

Mt. St. Helens National Volcanic Monument (Washington)

Ebey’s Landing National Historic Reserve (Washington)

Okanogan National Forest (Washington)

Mt. Baker National Forest (Washington)

Nearest National Park

North Cascades

Explore More – Mt. Baker has the second-most thermally active crater in the Cascade Range, ranking only after which volcano?

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Mt. Baker National Forest

Mt. Baker National Forest

Washington

Managed by U.S. Forest Service, Pacific Northwest Region

1,330,316 acres (1,302,215 federal/ 28,101 other)

Website: https://www.fs.usda.gov/r06/mbs

Overview

Mt. Baker National Forest’s namesake is the 10,781-foot glacier-covered stratovolcano that dominates the skyline of northwest Washington.  It is surrounded by the 119,989-acre Mt. Baker Wilderness and the specially designated 8,473-acre Mt. Baker National Recreation Area that allows snowmobiling on the southern slope.  About half of this National Forest is designated Wilderness, which also encompasses another active volcano within 566,057-acre Glacier Peak Wilderness.  In 1968, part of Mt. Baker National Forest turned into North Cascades National Park and five years later its remaining acres were administratively merged with Snoqualmie National Forest.

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Highlights

Mt. Baker National Recreation Area, Heather Meadows, Glacier Public Service Center, Nooksack Falls, Mountain Loop Scenic Byway, Baker Hot Springs, Boulder River Trail, Bagley Lakes Trails, Fire and Ice Trail, Baker Lake Trail, Pacific Northwest National Scenic Trail, Shadow of the Sentinels National Recreation Trail

Must-Do Activity

Mt. Baker Scenic Byway (Highway 542) passes Nooksack Falls as it heads east to Artist Point (open after snow melts).  Be sure to stop at photogenic Picture Lake and the Heather Meadows Visitor Center, built in the 1930s by the Civilian Conservation Corps (CCC).  A recreation pass is at most trailheads around nine-mile-long Baker Lake, a reservoir popular with campers and fishermen.  On the lake’s east side, boat-in or hike-in Maple Grove Campground provides amazing views of Mt. Baker on a clear day.

Best Trail

Mt. Baker Scenic Byway accesses several trailheads before dead ending in a huge parking lot at Artist Point, surrounded by snowy mountains.  Snow often covers the 4.2-mile one-way trail to Lake Ann well into July.  The first two miles share a path with the Pacific Northwest National Scenic Trail, dropping 800 feet to a junction with Swift Creek Trail.  From there, a 700-foot climb begins to Lake Ann, a popular destination for backpackers within Mt. Baker Wilderness, which in addition to the normal restrictions prohibits campfires and requires all human waste to be packed out.  On clear days, the payoff is unsurpassed views of Mt. Baker and Mt. Shuksan, a 9,131-foot peak in North Cascades National Park reached by continuing up the trail.

Watchable Wildlife

Mountain goats can be seen at high elevations, alongside marmot, pika, and snowshoe hare.  Other large mammals include black bears, mountain lions, bobcats, Columbian black-tailed deer, and elk.  In 1978, the Skagit Wild and Scenic River System was established along 125 miles of rivers, providing habitat for one of the nation’s largest winter populations of bald eagles.  Two types of sea-run trout and five species of salmon are anadromous fish found in the lakes and streams.

Photographic Opportunity

Picture Lake near the Heather Meadows Visitor Center creates wonderful reflections of the surrounding snowy mountains.  Plus, it is a good spot for huckleberries in September. 

Peak Season

Summer

Fees

$5 Northwest Forest Pass (or America the Beautiful pass) required at the end of Mt. Baker Highway and at trailheads around Baker Lake; Washington State Sno-Park permit is required November 1 through April 30 at some sites

Road Conditions

Mt. Baker Highway (542) received the National Forest Scenic Byway designation in 1988.  The 57-mile-long paved route from Interstate 5 is open most of the year between Bellingham and Mt. Baker Ski Area, but it is usually closed beyond that from October well into July because of heavy snowfall.

Camping

There are several campgrounds around Baker Lake, including the boat-in or hike-in Maple Grove Campground.  Marble Creek and Mineral Park are two free campgrounds on the Cascade River Road.  There are no campgrounds in the Heather Meadows area, but at lower elevations on the Mt. Baker Scenic Byway are Douglas-Fir and Silver Fir Campgrounds.

Wilderness Areas

Alpine Lakes Wilderness (also in Wenatchee National Forest)

Boulder River Wilderness

Clearwater Wilderness

Glacier Peak Wilderness (also in Wenatchee National Forest)

Henry M. Jackson Wilderness (also in Wenatchee National Forest)

Mt. Baker Wilderness

Noisy-Diobsud Wilderness

Norse Peak Wilderness

Pasayten Wilderness (also in Okanogan National Forest)

Wild Sky Wilderness

Related Sites

Ross Lake National Recreation Area (Washington)

Lake Chelan National Recreation Area (Washington)

Ebey’s Landing National Historical Reserve (Washington)

Gifford Pinchot National Forest (Washington)

Nearest National Park

North Cascades

Conifer Tree Species

Douglas-fir, western hemlock, mountain hemlock, Pacific silver fir, western redcedar, yellow-cedar, Pacific yew

Flowering Tree Species

bigleaf maple, vine maple, black cottonwood

Explore More – When was this area first protected within the 3,594,240-acre Washington Forest Reserve?

Learn more about this and the 154 other National Forests in our guidebook Out in the Woods