Serpent Mound crater

Serpent Mound crater, also known as the Serpent Mound Disturbance, [ cite journal | last =Reidel | first =S.P. | coauthors = Koucky, F.L., and Stryker, R.J| year = 1982 | title = The Serpent Mound disturbance, south central Ohio | journal = Am. Jour. of Sci| volume = 282| issue = 9| pages = 1343–1375 ] is an eroded meteorite impact crater in Ohio, United States. It lies largely in Adams County, with the northern part mostly in Highland County, except for a small northeast part in Pike County. [http://www.unb.ca/passc/ImpactDatabase/images/serpent-mound.htm Serpent Mound crater] at Earth Impact Database (accessed 11 April 2007)] "Subsurface Geology of the Serpent Mound Disturbance of Adams, Highland, and Pike Counties, Ohio." Ohio Department of Natural Resources, Division of Geological Survey. [http://dnr.ohio.gov/geosurvey/pdf/ri146.pdf PDF] (accessed 10 April 2007)]

It is classified as a complex crater because it features a central uplift, a transition zone, and a ring graben (a ring-shaped trough in the outer part of the crater). Although eroded, the original rim diameter is estimated at 8 km (5 miles) and the age is estimated to be less than 320 million years (Mississippian or younger). ]

The crater is named after the Serpent Mound, an effigy mound, located on a plateau in Brush Creek Valley within the crater.

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