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Toadstool Geological Park & Campground
State Park

Toadstool Geological Park & Campground

Oglala National Grassland · Harrison, NE

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  • Address:Harrison, NE
We display cached information from agency feeds. Hours, fees, permits, closures, fire restrictions, and conditions change without notice. Outdoors is not the permitting authority. Confirm current conditions for this campground using the links above before you go — you are responsible for compliance. Last verified by us: Jun 21, 2026. Spot an error in our data?

About

Toadstool Geologic Park is noted for its unusual geological formations, some in the shape of toadstools, and scientifically valuable fossil deposits. Our interpretive kiosk explains and illustrates the local geology and provides information and history about the local grasslands. During your hike look for signs of fossils that give scientists insight into the behavior of animals as they passed through this area as far back as 30 million years ago. In order for others to enjoy viewing these fossil resources collection is prohibited. The trailhead at the campground provides access to three hiking trails to choose from with varying degrees of difficulty. A one mile loop highlights many examples of eroded clay/sandstone formations. While on the trail, follow our interpretive brochure to learn the fascinating geology of the area. The Bison Trail leaves the interpretive loop at the half way point and continues up the canyon to Hudson-Meng Education and Research Center. Toadstool Campground to Hudson Meng is 3 miles one way. A five mile loop begins at the campground and proceeds on the graveled section of the interpretive trail for a short distance before heading north through the badlands and grasslands on the Great Plains Trail. After 1.5 miles the Great Plains Trail intersects with the 918 Road. Follow the signs to return to the Bison Trail and Toadstool Campground. The loop can be done in reverse going the other direction on the interpretive trail as you leave the campground. The Great Plains Trail developed by the Great Plains Trail Alliance is a cross country network of public land trails and roads beginning in Guadalupe National Park and ending at the Canadian Border. The Bison Trail, 918 Road and part of the 5 mile loop are part of this network. Great Plains Trail information can be found at www.greatplainstrail.org The campground consists of six sites with picnic tables and fire rings and upright grills and two accessible vault toilets. There is no water and the campground is open year round with limited services from mid- November to early May. In the off season pack in/pack out. Special features : In 1984 the Forest Service constructed a sod house near the site of a sod house built in 1929. The new soddie provides a look into the past when the homesteaders on the grasslands used the only abundant material available. The original sod house was lived in briefly before being abandoned and signs of the original structure no longer exist. Fossils and artifacts are protected under federal laws.

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Amenities

Flush Toilets
Potable Water
Picnic Tables
Fire Rings
Trash Service
Cell Service

Pet Policy

Pets allowed on leash

Campground Rules

  • Campfires generally permitted — verify current fire restrictions before lighting

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