Badlands National Park 1998
South Dakota
"The Wall" of the badlands
At dawn and . . .
In late afternoon light.
Rising Sun Catching the Peaks
Early Morning Sun over the Badlands
These are called "crepuscular rays." We have all seen them. They are caused by dust particles scattering sunlight. Anyone curious about this common phenomenon, seen by many but understood by few, is referred to the classic Light and Colour In The Open Air , M Minnaert, 1954, Dover Publications Inc., N.Y., p275.
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