The barrier between rain and snow sits at the bottom of Boulder’s iconic Third Flatiron as viewed from Chautauqua Park on an October morning.

Taken with a Samsung GX-1S (Pentax) digital SLR with a 135mm lens at f5.6 @ 1/350s. Blended Mantiuk and Reinhard HDR algorithms using the open-source Luminance HDR software and the GIMP. Red filter channel mixed.

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