Serpent Mound
CountryUSA
Date300 BC
Notable Feature411 m long
RegionOhio
About Serpent Mound
The largest serpent effigy in the world at 411 m. The open mouth appears to swallow an egg or the sun during solstice. Built by the Adena or Fort Ancient culture. The precise astronomical alignment is debated.
Related Ruins
Mesa Verde
Cliff dwellings built by the Ancestral Puebloans. The Cliff Palace has 150 rooms and 23 kivas. Built...
Pueblo Bonito
The largest great house in Chaco Canyon. Had 800 rooms. Built by the Ancestral Puebloans. The D-shap...
Cahokia
The largest pre-Columbian settlement north of Mexico. Monks Mound is the largest earthwork in the Am...
Wupatki
A Sinagua pueblo near Sunset Crater volcano. The eruption forced people to relocate here. Had a ball...