&hint1=I am nearby a substantial burial mound& &hint2=My form spans over 1200 feet& &hint3=I am located in southern Ohio& &hint4=I am in the form of a large snake& &choices=Silbury Hill;White Temple;Poverty Point, Louisiana;Niagara Falls;Serpent Mound;Itiba Cahubab (Old Mother Blood)& &answer=Serpent Mound& &search=Serpent Mound& &title=Serpent Mound& &artist=& &medium=& &date=c.200 BCE& &location=Adams County, Ohio& &dimensions=&