Twin Mounds

Twin Mounds


TWIN MOUNDS

While Monk’s Mound overlooks the Grand Plaza at the
Cahokia site, the Twin Mounds are located just behind
the plaza in an area adjacent to the Interpretive Center.
They are fine examples of conical mounds built throughout
the mound building regions of North America. Much smaller
than Monk’s Mound, conical mounds were sometime used as
burial sites. There were also ridge-topped mounds that
had a rectangular base and effigy mounds built in the
shape of animals or reptiles. Notable effigy mounds can
be found in the Ohio River Valley, Serpent Mound, and in
northeastern Iowa where Effigy Mound National Park is
located. The Mississippians built about 120 earthen
mounds in the area between St. Louis, MO. and East St.
Louis, IL. About 65 of these mounds are preserved within
the boundaries of the Cahokia historic site.