![[Profile showing geological structure of a section in Virginia from Mill Mountain in Rockbridge County to Blue Ridge Mountain in Augusta County]](https://tile.loc.gov/image-services/iiif/service:gmd:gmd388:g3883:g3883r:cwh00223/full/!1200,1200/0/default.jpg)
Library of Congress — Maps
[Profile showing geological structure of a section in Virginia from Mill Mountain in Rockbridge County to Blue Ridge Mountain in Augusta County]
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