Browse by form
See ancient designs shaped into soil, stone, and terrain—works whose full scale is often clearest from far above or across the landscape.
001
Hundreds of geometric earthworks revealed by Amazon deforestation. Squares, circles, and octagons carved into hilltops, rivaling Stonehenge in scale.
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002
Ceremonial landscape of enclosures, mounds, and other earthworks associated with Irish kingship. The passage tomb known as the Mound of the Hostages is much older.
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003
Vast network of desert geoglyphs made by clearing dark surface stones. Straight lines, geometric forms, and figures such as a hummingbird, monkey, and spider cross the plateau.
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004
Concentric earthen ridges in Louisiana built by hunter-gatherers. Among the largest earthworks ever made by a non-agricultural society.
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005
Quarter-mile effigy mound in Ohio shaped like an undulating serpent swallowing an egg. Aligns with the summer solstice sunset.
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