Monday, August 17, 2009

Picture of the Day – Fins and Sky


There is nothing more beautiful than late afternoon light in southern Utah where the red light of the sun hits the red rock of the canyons. I took this picture in The Arches National Park late one afternoon when I also got lucky with an amazing sky.

This kind of rock formation is called a fin, and is made of Entrada Sandstone. A fin is the first stage of the formation of an arch. Overtime, water will erode the small recesses in the rock. In time those recesses will grow to become an alcove…and if we are lucky, some alcoves will open a window in the rear and an arch is born. Sadly, I won’t be around to photograph this fin when it becomes an arch. With only around 10” of rain per year, it does take a while.

Like many of my pictures in this blog, the small size of the photo does not do it justice.

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