Explore 28 Earthworks Collections - Atlas Obscura
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Anderson, Indiana

The Great Mound

Indiana’s largest prehistoric earthwork, aligned with the solstices.
The walls of the Octagon Earthworks in Heath, Ohio, form an enclosure large enough to fit four Roman Colosseums.
astronomy

These 2,000-Year-Old Mounds Trace the Path of the Moon

After spending the last century as a golf course, the Octagon Earthworks are now protected—and celebrated—for their ancient Native American origins.
Olivia Young March 5, 2025
Deddington, England

Deddington Castle

The remains of what was once a motte-and-bailey castle, these earthworks offer visitors a tangible connection to England’s medieval past.
Matlock, England

Bailey's Tump

A pile of earth left over from a water supply project was converted into an anti-aircraft installation during World War II.
Reykjavik, Iceland

Þúfa

This earthwork installation sits on a grassy hill, celebrating Iceland's past and present.
Burnett, Wisconsin

Nitschke Mounds Park

The property contains 37 preserved animal effigy mounds constructed by Native Americans between 800-1100.
The Serpent Mound in Ohio, as beautiful as it is impressive, has endured centuries of misuse and misinterpretation.
earthworks

In Ohio, Ancient Mounds and Earthworks Gain Recognition—But Remain Imperiled

Built by Native Americans, Serpent Mound and other spectacular ancient monuments have endured centuries of abuse and neglect. That's finally changing.
Stephen Warren November 13, 2023
Thornborough Henges from above
West Tanfield, England

Thornborough Henges

This collection of ancient structures makes up part of the largest group of prehistoric earthworks in Britain.
The flat circular centre of the henge
Eamont Bridge, England

King Arthur's Round Table

Though this large circular site is now named for the legendary king, its history dates back to the Neolithic era.
The largest platform mound at Aztalan
Jefferson, Wisconsin

Aztalan State Park

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.
Harking back to ancient America, the Newark Earthworks formed a ceremonial center and a sacred site.
earthworks

Podcast: Newark Earthworks

Join us for a daily celebration of the world’s most wondrous, unexpected, even strange places.
The Podcast Team June 3, 2021
Steps to Mound A
Pioneer, Louisiana

Poverty Point World Heritage Site

This ancient settlement contains some of the largest earthen mounds in North America.
Bury Ditches
Lydbury North, England

Bury Ditches

This Iron Age hill fort remained hidden until a series of storms revealed its history.
The Queen's Sconce
Nottinghamshire, England

Queen's Sconce

A well preserved remnant of the English Civil War.
An aerial view of a portion of the site that a drone surveyed in Kansas.
earthworks

How Drones Help Archaeologists Peer Into the Earth

A late-night drone flight spotted a large, circular earthwork beneath a field in Kansas.
Karen Chernick October 9, 2020
Linford Barrows
County Antrim, Northern Ireland

The Linford Barrows

These unknown Bronze Age earthworks are believed to be ancient burial mounds.
Manchester, Tennessee

Old Stone Fort

This limestone outcropping was once a ceremonial site for ancient Native Americans.
Nazca, Peru

Nazca Lines Observation Tower

This metal tower in the desert provides views of a handful of Nazca geoglyphs.