Assertion: effigy mound | /r/LocatedNear | smaller geometric mounds
Facets:
value: often
type: TEMPORAL
Source sentences:
text: It was part of a tradition of effigy mound building which began in 750 and declined in 1000-1200; these effigy mounds were defined by a central zoomorphic or anthropomorphic mound, often surrounded by smaller geometric mounds.