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500,000,000-Year-Old Wormholes

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500,000,000-Year-Old Wormholes
The "lines" on this sandstone, which was once at the bottom of an inland sea where the Appalachian Mountains now stand, are the fossilized passages made by ancient sea worms called skolithos.

Shenandoah National Park, VA-- August 2007


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Image Data
Bob SihlerSubmitted by Bob Sihler
on Aug 20, 2007 9:05 pm

Image ID: 326492
Hits: 1800 
Lat/Lon: 38.28970°N / 78.7139°W
Object Title: 500,000,000-Year-Old Wormholes

Image Type(s): Scenery