Serpent Mound crater
Serpent Mound crater , also known as the Serpent Mound Disturbance , is an eroded meteorite impact crater in Ohio , United States . 
<triplet> Serpent Mound crater <subj> impact crater <obj> instance of <subj> Ohio <obj> located in the administrative territorial entity <subj> United States <obj> country <triplet> Ohio <subj> United States <obj> country <triplet> United States <subj> Ohio <obj> contains administrative territorial entity