This image was taken on a quiet evening a few weekends ago in the Odessa Lake area in Rocky Mountain National park. This shows the Marigold ponds, a little lake hidden from sight from the trail. The reflected peak is called the Notchtop. This evening was superbly quiet and the watersurface was completely undisturbed safe for some insects. I love the strong symmetry created by the clouds and their reflection. As you would see in a large print, the reflection is more perfect than any I have ever seen before.
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Technical data: Nikon D300, Tokina 11-16 mm at 11.5 mm, f/11, 1/13s, circular polarizer, 2 stop grad ND. Processed from raw in Lightroom.
Same image on flickr. The relevant Google+ post.