Photo #a072-12, from the 2001/Jan03 directory.

 title = Rocks and Waves
 description = This is Sioux Quartzite. It was layed down 2 million years ago on the bottom of a shallow lake. Due to silting, the wave pattern formed during mild times were preserved throughout the yearly floods. This patterned sand was compressed into the rock you see
 place = Palisades State Park
 city = Near Garretson
 state = SD
  This photo is also available in the following formats:
     Medium (560 x 854 pixels, 187 KB)
     Small (291 x 444 pixels, 59 KB)

Note: some photographs have an image stamp of my old website