Natural monuments in Shawnee National Forest showcase unique geological formations and diverse natural landscapes in Southern Illinois. The region is characterized by ancient sandstone bluffs, rock shelters, and forested hills, shaped over millions of years by natural erosion. These areas hold historical significance, having been utilized by Indigenous peoples and early settlers. Visitors can explore a variety of natural features, from dramatic rock formations to scenic overlooks and natural bridges.
Last updated: July 8, 2026
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Giant City State Park has some dramatically beautiful scenery, with massive, fantastically shaped chunks of sandstone set against a lush forest. There are plenty of trails for hiking and other uses, including horseback riding. The park is open 7 a.m. - 10 p.m. The River to River Trail runs straight through the park as well.
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This portion of the River to River Trail wends into the Garden of the Gods — a stunning collection of sandstone formations, sprouting out of the forest as if they had indeed grown out of the ground to please the gods. Wind and water have eroded the stone into fantastical shapes.
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Set in the lush Shawnee Hills of southern Illinois, Ferne Clyffe State Park spreads across roughly 2,430 acres just south of Goreville and offers a rich mix of forest, bluffs, waterfalls, and trails. You can hike through woods filled with fern-covered limestone outcrops, explore Hawks’ Cave and a dramatic intermittent waterfall on the Big Rocky Hollow Trail, or wander around Ferne Clyffe Lake’s one-mile shoreline. Campgrounds range from modern sites with electricity to primitive and equestrian camps, and there are several picnic shelters and lookout points. With over 700 plant species, vibrant spring wildflowers, vivid fall foliage, and rugged natural scenery, this park delivers one of the most scenic escapes in Illinois.
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This portion of the River to River Trail wends into the Garden of the Gods — a stunning collection of sandstone formations, sprouting out of the forest as if they had indeed grown out of the ground to please the gods. Wind and water have eroded the stone into fantastical shapes.
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From here, you have beautiful nature views far into the distance. This is a great spot to stop for a break before continuing on. This viewpoint can be reached from the Little Grand Canyon trailhead via a moderate hiking trail.
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Visitors frequently enjoy the unique geological formations at Garden of the Gods Recreation Area, known for its dramatic sandstone shapes. Another popular spot is Chalk Bluff Overlook, which offers expansive views into the distance. Ferne Clyffe State Park is also highly regarded for its diverse landscapes, including bluffs, waterfalls, and a lake.
The region is rich in ancient sandstone bluffs, unique rock formations, and natural bridges, all sculpted over millions of years by wind and water erosion. You'll encounter features like the evocative Camel Rock at Garden of the Gods, impressive honeycomb patterns in sandstone at Rim Rock, and the striking arch of Pomona Natural Bridge. Cave-in-Rock State Park also features a massive limestone cave carved by water.
Yes, several natural monuments are suitable for families. Ferne Clyffe State Park is considered family-friendly, offering a mix of trails, a lake, and interesting features like Hawks’ Cave. The Observation Trail at Garden of the Gods is a short, paved loop, making it accessible for many. Pomona Natural Bridge also features an easy loop trail that allows exploration both above and below the bridge.
Spring and autumn are particularly rewarding. Spring brings vibrant wildflowers, especially noticeable at Rim Rock National Recreation Trail and Ferne Clyffe State Park. Autumn offers spectacular colorful foliage across the woodlands, enhancing the scenic views at places like Garden of the Gods. While beautiful, be aware of seasonal considerations for trails, such as potential mud after rain or snow in winter.
Many of the natural monuments hold significant historical value. Garden of the Gods was used by Indigenous peoples as a spiritual site and by pioneers as a navigational landmark. Rim Rock National Recreation Trail features Ox-Lot Cave, a massive rock overhang used by early European settlers and Native Americans, and remnants of a prehistoric Native American stone wall. Cave-in-Rock has a rich history as a shelter for Native Americans and later as a hideout for river pirates.
The Shawnee National Forest offers a variety of hiking opportunities. At Garden of the Gods, you can explore the 0.25-mile paved Observation Trail or venture onto 5.5 miles of interconnecting trails. Rim Rock National Recreation Trail provides both an upper paved trail and a lower dirt trail along impressive bluffs. For more options, you can find numerous routes in the Hiking in Shawnee National Forest guide, including the moderate Garden of the Gods Loop.
The main Observation Trail at Garden of the Gods Recreation Area is a short 0.25-mile paved loop, which can be completed in a relatively short time, allowing visitors to see the main formations. For those seeking a longer experience, there are 5.5 miles of interconnecting trails that can extend your visit for several hours, depending on your chosen route and pace.
Rim Rock National Recreation Trail is unique for its designation as a national recreation trail and its blend of scenic beauty and history. It features an upper paved trail with interpretive signs and a lower dirt trail that takes you along the base of impressive sandstone bluffs, revealing strange honeycomb patterns and huge fallen boulders. A significant historical feature is Ox-Lot Cave, a large rock overhang with a past use by Native Americans and early settlers.
Beyond hiking, the Shawnee National Forest area offers various outdoor activities. Ferne Clyffe State Park, for example, offers camping, and its lake is suitable for fishing. Cave-in-Rock State Park, while distinct, also provides camping, fishing, and picnicking facilities. For running enthusiasts, there are several running trails in Shawnee National Forest.
While popular sites like Garden of the Gods can attract crowds, exploring the longer, interconnecting trails at these locations can often lead to quieter experiences. Pomona Natural Bridge, with its short loop trail and surrounding mossy bluffs and small creeks, can offer a more tranquil visit, especially during off-peak hours or seasons. Exploring lesser-known sections of the broader Shawnee National Forest can also lead to peaceful discoveries.
Ferne Clyffe State Park is a diverse natural monument spanning approximately 2,430 acres. It's known for its rich mix of forest, bluffs, and waterfalls, including fern-covered limestone outcrops and Hawks’ Cave. Visitors can also enjoy a one-mile shoreline around Ferne Clyffe Lake. The park boasts over 700 plant species, making it a beautiful spot for spring wildflowers and fall foliage.
Yes, a short and easy 0.3 to 0.35-mile loop trail at Pomona Natural Bridge allows visitors to walk directly across the top of the sandstone arch. The trail also provides access to view the bridge's structure from below, offering different perspectives of this impressive natural formation.


Extend your search for the best caves by checking out these guides of the top ones in Shawnee National Forest: