Badlands National Park Fossils
Rockhounding site in Wall, South Dakota · Fossils
Badlands National Park Fossils is a fossil rockhounding site near Wall, SD. Fee required. Best season: May through September for open roads and mild hiking weather.
Typical season: May through September for open roads and mild hiking weather
About Badlands National Park Fossils
Badlands National Park protects roughly 244,000 acres of sharply eroded buttes, pinnacles, and mixed grass prairie in southwestern South Dakota between the towns of Wall and Interior. The landscape is famous for fossils, but this is a viewing and science destination, not a collecting site. Federal law prohibits removing rocks, minerals, fossils, plants, or artifacts from any national park.
The park's rocks record the end of the Age of Mammals in North America. Sediments of the Pierre Shale, Brule, Chadron, and Sharps formations were laid down between about 75 and 28 million years ago. The Brule and Sharps units in particular hold a dense record of Oligocene mammals, including brontotheres, oreodonts, nimravids, early horses, and camels. As erosion strips away soft bentonite-rich layers, fossils continue to weather out on slopes, which is why the National Park Service staffs a Fossil Preparation Lab at Ben Reifel Visitor Center.
Agate and bentonite appear in the regional rock column, and bentonite's swelling behavior helps drive the rapid erosion that keeps new material exposed. Visitors come to hike the Door and Window trails, drive Badlands Loop Road, camp at Cedar Pass, and learn from exhibits and ranger programs. Anything you find must stay in the park.
Key facts
Structured details for trip planning — verify access and fees with the land manager before you visit.
- Specimen type
- Fossil
- Primary specimens
- Fossil Mammals, Agate, Bentonite
- Fee status
- Fee required
- Nearest town
- Wall
- State
- South Dakota
- Coordinates
- 43.75000, -102.50000
- Best season
- May through September for open roads and mild hiking weather. Spring wildflowers and fall light are excellent for photography
- Access difficulty
- Easy to moderate. Scenic drives and paved overlooks suit most visitors; backcountry trails cross steep clay slopes that turn slick when wet
- Collecting hazards
- See safety tips
- Camping
- Cedar Pass Campground near the visitor center. Backcountry camping with a free permit from the visitor center
- Land manager
- National Park Service
- Activities
- Scenic driving on Badlands Loop Road, hiking, fossil exhibits, stargazing, and wildlife viewing. Fossil and rock collecting are prohibited
- Facilities
- Ben Reifel Visitor Center, Cedar Pass Lodge, campground, Fossil Preparation Lab, picnic areas, and ranger programs
- Last updated
- 2026-09-15
What to pack for Badlands National Park Fossils
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The experience
- Best time to visitMay through September for open roads and mild hiking weather. Spring wildflowers and fall light are excellent for photography
- AccessEasy to moderate. Scenic drives and paved overlooks suit most visitors; backcountry trails cross steep clay slopes that turn slick when wet
- FacilitiesBen Reifel Visitor Center, Cedar Pass Lodge, campground, Fossil Preparation Lab, picnic areas, and ranger programs
- Camping nearbyCedar Pass Campground near the visitor center. Backcountry camping with a free permit from the visitor center
Highlights & features
- One of the richest Oligocene mammal fossil records in North America, protected inside a national park
- Sharply eroded buttes, pinnacles, and grasslands of the White River Badlands
- Fossil Preparation Lab at the visitor center where staff work on specimens found in the park
- Badlands Loop Road and overlooks near Wall and Interior give easy access to dramatic geology
- Agate and bentonite occur in the rock sequence, but nothing may be removed from the park
- Brule, Chadron, and Sharps formations expose roughly 75 to 28 million year old sedimentary layers
- Bentonite clay swells when wet, which helps drive the rapid erosion that constantly exposes new fossils
- Famous fossil groups include brontotheres, oreodonts, nimravids, early horses, and camels
How to get there
The main visitor area is Ben Reifel Visitor Center at Cedar Pass on South Dakota Highway 240, the Badlands Loop Road, about 10 miles south of Interstate 90 exit 131 near Wall. Wall, famous for Wall Drug, sits on I-90 and is the usual gateway from the east. Interior, a small town inside the park boundary, offers another entrance station and access to the South Unit. The remote Stronghold Unit and co-managed lands in the North Unit reach from Interior toward the Pine Ridge. Three entrance stations operate in season: Northeast, Pinnacles, and Interior. Purchase passes at a station, on recreation.gov, or use an America the Beautiful pass. Call 605-433-5361 for road, trail, and seasonal closure information before a long drive.
The main visitor area is Ben Reifel Visitor Center at Cedar Pass on South Dakota Highway 240, the Badlands Loop Road, about 10 miles south of Interstate 90 exit 131 near Wall.
Wall, famous for Wall Drug, sits on I-90 and is the usual gateway from the east. Interior, a small town inside the park boundary, offers another entrance station and access to the South Unit. The remote Stronghold Unit and co-managed lands in the North Unit reach from Interior toward the Pine Ridge.
Three entrance stations operate in season: Northeast, Pinnacles, and Interior. Purchase passes at a station, on recreation.gov, or use an America the Beautiful pass. Call 605-433-5361 for road, trail, and seasonal closure information before a long drive.
Plan your visit
Plan around geology and wildlife rather than collecting. Pay the entrance fee at a station or online before arrival. Credit and debit cards only; the park does not accept cash.
Start at Ben Reifel Visitor Center for the park film, fossil exhibits, and the Fossil Preparation Lab viewing window. Short trails like Door, Window, and Notch give the classic badland experience without a long hike. Badlands Loop Road connects most overlooks in the South Unit.
Bring sun protection, sturdy shoes, and extra water for open trails. After rain, bentonite turns paths slick and trails may close temporarily.
For legal South Dakota collecting outside the park, research Bureau of Land Management or private land options elsewhere in the state. See other South Dakota collecting areas where removal is permitted.
Things you need to take to Badlands National Park Fossils
Estwing Brick Set Chisel
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DEWALT DPG82 Concealer Safety Glasses
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SE Specimen Storage Bags 10-Pack
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Mechanix Work Gloves with Grip
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Access & fees
Badlands National Park is National Park Service land. Regulation 36 CFR 2.1 prohibits possessing, removing, disturbing, or collecting rocks, minerals, fossils, plants, and artifacts without a scientific research permit. Recreational rockhounding, fossil digging, and souvenir collecting are not allowed anywhere in the park, including road cuts, washes, and backcountry. If you discover a fossil, note the location, take a photo, and report it to staff. Do not attempt excavation. Entrance fees apply to all visitors unless covered by a valid federal pass. Backcountry camping requires a free permit. Metal detectors and drones are restricted under superintendent rules. Scientific collection requires a research permit through the NPS.
Badlands National Park is National Park Service land. Regulation 36 CFR 2.1 prohibits possessing, removing, disturbing, or collecting rocks, minerals, fossils, plants, and artifacts without a scientific research permit.
Recreational rockhounding, fossil digging, and souvenir collecting are not allowed anywhere in the park, including road cuts, washes, and backcountry. If you discover a fossil, note the location, take a photo, and report it to staff. Do not attempt excavation.
Entrance fees apply to all visitors unless covered by a valid federal pass. Backcountry camping requires a free permit. Metal detectors and drones are restricted under superintendent rules. Scientific collection requires a research permit through the NPS.
Frequently asked questions
Can you collect fossils at Badlands National Park?
No. National Park Service regulation 36 CFR 2.1 prohibits removing or disturbing fossils, rocks, minerals, plants, and artifacts in all national parks. If you find a fossil, photograph it, note the location, and report it to park staff rather than picking it up.
What fossils are found in Badlands National Park?
The park is best known for Oligocene mammals from the Brule and Sharps formations, including brontotheres, oreodonts, nimravids, early horses, and camels. Fossils continue to erode out of bentonite-rich slopes, which is why the park operates a Fossil Preparation Lab for scientific work.
How much is the entrance fee for Badlands National Park?
A private vehicle 7-day pass costs $30, a motorcycle pass costs $25, and a walk-in or bicycle pass costs $15 per person. The park accepts credit and debit cards only. America the Beautiful annual and lifetime passes cover entrance for the pass holder and passengers in one vehicle.
Where is Badlands National Park located?
The park lies in southwestern South Dakota near the towns of Wall and Interior. Most visitors enter at Ben Reifel Visitor Center on Highway 240, about 10 miles south of Interstate 90 exit 131 at Wall. Interior provides another entrance on the west side of the park.
What is bentonite and why does it matter at the Badlands?
Bentonite is a clay formed from altered volcanic ash in the park's sedimentary layers. It absorbs water and swells, which weakens rock and speeds erosion. That constant erosion is part of why new fossils keep appearing on slopes, and also why trails become dangerously slick after rain.
Can you take agate from Badlands National Park?
No. Agate may occur in the regional rock column, but the same federal rules that protect fossils also prohibit removing any rocks or minerals from the park. Agate collectors must look on Bureau of Land Management, state, or private land outside the park boundary with landowner permission.
What is the Fossil Preparation Lab at Badlands?
The lab at Ben Reifel Visitor Center is where park paleontologists and volunteers prepare fossils discovered in the park. Visitors can often watch work through a viewing window and learn how specimens are documented before going to museum collections. It is not a public collecting facility.
When is the best time to visit Badlands National Park?
Late spring through early fall offers the most reliable road and trail access with warm days and cool mornings. Summer afternoons are hot on exposed trails. Spring wildflowers and autumn light are excellent for photography, while winter visits are possible but many interior roads close.
Are there campgrounds in Badlands National Park?
Cedar Pass Campground near Ben Reifel Visitor Center offers reservable sites with seasonal amenities. Free backcountry camping permits are available at the visitor center for hikers who want to camp away from roads. Camping does not include any right to collect rocks or fossils.
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Culture & history
Lakota people have long ties to the White River Badlands, and the park's South Unit includes the Stronghold District associated with Ghost Dance history. The modern park was established in 1939 and expanded when the North Unit was added in 1976. Paleontologists have worked the White River Badlands since the nineteenth century. The Big Pig Dig and other excavations recovered thousands of specimens now held in museum collections. The park exists so that record stays intact for science and public education rather than being stripped by collectors.
Conservation
Every fossil left in place retains scientific context that is lost the moment it is picked up. The park's erosion rate constantly exposes new material, and staff rely on visitor reports to document finds. Stay on trails to protect fragile grassland soils and avoid trampling burrows. Do not stack rocks or carve slopes. Pets must stay on paved areas only in most of the park. Report illegal collecting to park rangers or call 605-433-5361. Responsible visitation keeps the Badlands focused on protection and research.
Sources & updates
Official land managers cited on this page
Always confirm current rules, closures, and fees on the agency site before visiting.
Spotted outdated access, fees, or safety info? Use Report an access change on this page or send a correction with the page URL — we review every submission.