International Space Station 80 mm Photograph

Image credit:  Image Science and Analysis Laboratory, NASA Johnson Space Center (http://eol.jsc.nasa.gov)

BIG SIOUX RIVER, FLANDREAU  44.05N, 96.60W

The link is to kayaking on the Big Sioux River .

ZERO MAGNIFICATION IMAGE

3X MAGNIFICATION (RED LINE  = 1MM)

1X MAGNIFICATION (RED LINE  = 1MM)

2X MAGNIFICATION (RED LINE  = 1MM)