Category:Gray chert (Knox County, Ohio)

Media in category "Gray chert (Knox County, Ohio)"

The following 3 files are in this category, out of 3 total.

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  Gray chert (Knox County, Ohio, USA) 1.jpg 3,112 × 2,623; 5.22 MB
  
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  Gray chert (Knox County, Ohio, USA) 2.jpg 3,177 × 2,431; 5.31 MB
  
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  Gray chert (Knox County, Ohio, USA) 3.jpg 1,878 × 2,642; 3.31 MB