Natural engineering

Arnold Engineering Development Center's Brian Roebuck stands next to a column of limestone in a large chamber in Cedar Ridge Crystal Cave near South Pittsburg, Tenn. The photograph was taken by his wife Lynn, an avid nature photographer and active member of the local chapter of the National Speleological Society. Roebuck and his wife had a cave millipede named after them for their assistance in cave conservation and species identification. It is called millipede genus P. roebuckorum. (Photo by Lynn Roebuck)

PHOTO BY: Lynn Roebuck
VIRIN: 070423-O-0000U-001.JPG
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