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Secrets Of Oregon's Prehistoric Stone Circles

Published:

Modified: 5 October 2026

by Gwenette Balderrama

Secrets Of Oregon's Prehistoric Stone Circles

Oregon's best-documented prehistoric stone circles, the Stinkingwater Medicine Wheels, are estimated at just 110–340 years old, placing them in the historic period—not thousands of years. Other circular rock forms in the state have speculative dates ranging from roughly 3000 to 500 BP, but the story is more nuanced than a single ancient origin. Here's what's actually documented about Oregon's stone circles and where you can see them.

Discovering Oregon's Stone Circles

Oregon hides a lesser-known secret: stone circles. These formations, often overshadowed by more famous landmarks, offer a glimpse into the region's past. Let's explore some of these sites—and separate fact from fiction.

1. The Stinkingwater Medicine Wheels

The only well-documented prehistoric stone circles in Oregon are the Stinkingwater Medicine Wheels, located in the Stinkingwater Mountains near Burns. These circles, estimated at 110–340 years old, are on BLM land. Researchers have suggested Native peoples may have used them for ceremonial or religious purposes, but their exact function remains unknown. No source supports the claim that they served as astronomical markers.

2. The Mima Mounds

Located in Washington's Mima Prairie, these mounds have puzzled scientists for years. Some believe they were created by ancient peoples, while others think natural processes formed them. They are not in Oregon.

3. The Stonehenge Replica

In Maryhill, a full-scale replica of England's Stonehenge stands as a war memorial. Though not prehistoric, it offers an opportunity to experience the grandeur of stone circles without leaving the Pacific Northwest.

4. The Carver Petroglyphs

Near the Clackamas River, these ancient carvings on stone offer a glimpse into the lives of the region's early inhabitants. The petroglyphs, depicting animals and human figures, are believed to be thousands of years old—but they are not stone circles.

5. The Fort Rock Basin

This area, once a massive lake, is now a desert landscape with archaeological evidence of early human settlements. However, no sourced fact documents ancient stone circles here. The Stinkingwater Medicine Wheels are the documented circles, located near Burns, not in the Fort Rock Basin.

6. The Columbia River Gorge

Home to numerous petroglyphs and stone formations, the Columbia River Gorge is a treasure trove of ancient history. The rock art here, created by indigenous peoples, tells stories of their lives and beliefs—but these are not stone circles.

7. The Paisley Caves

These caves, located in south-central Oregon, are famous for the ancient artifacts found within them. No sourced fact documents stone circles at the Paisley Caves. The known stone circles are the Stinkingwater Medicine Wheels in southeastern Oregon.

8. The Lava Beds National Monument

This site, known for its volcanic landscape, also contains evidence of Native American use. However, no sourced fact documents ancient stone circles here. The documented stone circles are the Stinkingwater Medicine Wheels on BLM land in southeastern Oregon.

9. The Alvord Desert

In this remote desert, archaeological evidence of early inhabitants can be found scattered across the landscape. But no sourced fact documents stone circles in the Alvord Desert. The documented circles are in the Stinkingwater Mountains.

10. The Hart Mountain National Antelope Refuge

This refuge, known for its wildlife, also contains archaeological evidence of early inhabitants. However, no sourced fact documents ancient stone circles here. The documented circles are the Stinkingwater Medicine Wheels in the Stinkingwater Mountains.

11. The Steens Mountain

Rising dramatically from the surrounding landscape, Steens Mountain is home to archaeological evidence of early inhabitants. But no sourced fact documents ancient stone circles on Steens Mountain. The documented circles are in the Stinkingwater Mountains near Burns.

Oregon's Ancient Wonders Await

Oregon's stone circles—specifically the Stinkingwater Medicine Wheels—offer a glimpse into the historic period, not just deep prehistory. These formations, scattered across the southeastern part of the state, invite curiosity and exploration. Visiting these sites, you can feel a connection to the past and imagine the lives of those who built them. Whether you're a history buff or just love a mystery, these stone circles are worth the trip.

Remember to respect these ancient sites. They hold cultural significance and deserve preservation for future generations. Pack your curiosity, a good map, and maybe a camera to capture the views.

Exploring Oregon's stone circles is a journey through time. Lace up your hiking boots and get ready to uncover the secrets of these wonders. Oregon's stone circles are waiting for you.