I think clouds are cool, especially when dramatically lit. This evening that’s what they were. They were also casting shadows. They often do, of course, when they are in a mostly clear sky, but this evening was different. Instead of casting shadows on the ground, as they normally do, the sun was low enough in the sky that they were casting shadows horizontally on each other. The clouds in this picture are not as dramatic as some I photographed this evening but I love the horizontal band of darker sky, which is the shadow of the cloud on the left. The atmospheric haze caught the light and made the ‘beam’ of the shadow show up.