Possible candidate for one of the Holocene Start impact "craters"
http://www.meridianbooster.com/ArticleDisplay.aspx?e=1484183
Since we have a 1 inch thick layer of impactites near Sandusky, and deposits from
Canada in southern Indiana and Ohio, one of the impactors had to be somewhere
around this region.
Shawnee tradition held there were multiple impacts, but we don't know if they were accurate,
or how many of the impacts may have been air bursts.