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Photos typically include their locations, so you can use locations as keywords too. You get more hits with shorter words, and fewer hits as you become increasingly specific with increasing numbers of keywords. It’s best to use singular rather than plural (eg “volcano” instead of “volcanoes”).

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5332 images found

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Syncline at Sideling Hill, Maryland

Mississippian clastic rocks of the Rockwell and overlying Purslane Formations, folded into a near-upright syncline at the Sideling Hill roadcut on I-68 in Maryland (220908-112)

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Syncline at Sideling Hill, Maryland

Mississippian clastic rocks of the Rockwell and overlying Purslane Formations, folded into a near-upright syncline at the Sideling Hill roadcut on I-68 in Maryland (220908-110)

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Coal Strip Mine, West Virginia

Coal Strip Mine into Pennsylvanian Allegheny Formation, West Virginia

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Triassic diabase, Gettysburg, Pennsylvania

Triassic diabase and Little Round Top, Gettysburg, Pennsylvania (220908-97)

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Susquehanna River and the Veterans Memorial Bridge, southern Pen

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Triassic diabase, Gettysburg, Pennsylvania

Close-up of Triassic diabase with slightly weathered and fresh surfaces exposed (220908-91)

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Triassic diabase, Devils Den, Gettysburg,

Triassic diabase at Devils Den, Gettysburg, Pennsylvania (220908-86)

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Triassic diabase, Devils Den, Gettysburg,

Triassic diabase at Devils Den, Gettysburg, Pennsylvania (220908-85)

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Syncline at Sideling Hill, Maryland (vertical)

Mississippian clastic rocks of the Rockwell and overlying Purslane Formations, folded into a near-upright syncline at the Sideling Hill roadcut on I-68 in Maryland (220908-68)

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Syncline at Sideling Hill, Maryland

Mississippian clastic rocks of the Rockwell and overlying Purslane Formations, folded into a near-upright syncline at the Sideling Hill roadcut on I-68 in Maryland (220908-64)

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