At one point, we dropped into a valley full of wetlands, and got out to check for Swamp Sparrows and whatever else might be around. After a bit of searching, I turned the other direction, and Whoa! The sky was ribbed with a fantastic formation of clouds, as if a giant pinwheel was centered on some distant point and slowly revolving through the sky. It was a striking atmospheric spectacle, and I tried to capture the clouds with my camera.
These, apparently, are classified as Altocumulus Clouds. They typically form between 7,000 to 20,000 feet, and can take on the look of rolling uniform layers, such as in this formation. It was a stunning skyscape, to be sure.
I'm glad we bumbled under these clouds. It's easy to get too busy to take time to appreciate - or notice - magnificent spectacles such as this.