Category:Diabase boulders in Pennsylvania
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Media in category "Diabase boulders in Pennsylvania"
The following 2 files are in this category, out of 2 total.
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Diabase boulders Gifford Pinchot State Park.jpg 3,088 × 2,056; 4.6 MB
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S Petes.JPG 1,200 × 900; 519 KB