Cant figure out image in center of lapel pin. Any help ???

[atprolen]

Found 12 inches down in northern michigan

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[jeff of pa]

only thing I can even see a resemblance to is a train on a track.
& I'm even Doubting that the more I look.
If it is, the artist was a very poor one

 

[OregonMaryJayne]

Looks like a Grecian structure, roman structure with pillars, arches and steps as the base.