Des Plaines crater
The Des Plaines crater or Des Plaines disturbance is recognized as an impact crater in Cook County , Illinois , United States . 
<triplet> Des Plaines crater <subj> impact crater <obj> instance of <subj> Illinois <obj> located in the administrative territorial entity <triplet> Cook County <subj> Illinois <obj> located in the administrative territorial entity <triplet> Illinois <subj> Cook County <obj> contains administrative territorial entity