mcamsa 0 Report post Posted July 11 I found a large rock (about the length of a cinderblock and probably the same weight) with an indentation of something. Anyone know what this could be? Just curious. Share this post Link to post Share on other sites
Fossildude19 9,292 Report post Posted July 11 Welcome to the Forum. According to this geologic map of West Virgina, Boone county has Pennsylvanian bedrock. That would indicate plant matter to me. Not sure you could go much further than that, as I am not seeing much in the way of diagnostic details. Regards, Share this post Link to post Share on other sites
Mark Kmiecik 309 Report post Posted July 11 It does look like plant matter. I don't think we could be more specific than that. It doesn't have enough detail visible in the photo. The other possibility is that it is some kind of geological inclusion or mineral stain. Share this post Link to post Share on other sites
