Eye? Carved in Rock

[Rachel at the Ranch]

Different lighting on the same rock. Has anyone seen this shape before? I haven't gotten to explore this area further, but was curious if anyone can tell me what this might be? Located in NE Oklahoma.

Thank You!

 

[Treasure_Hunter]

When the picture is blown up the hole looks natural, not carved, most likely once held a fossil.

 

[Rachel at the Ranch]

When the picture is blown up the hole looks natural, not carved, most likely once held a fossil.

I wondered if it might be something like that. Thank you!