Cloud shadow with crepuscular sun rays

The sun low in the sky is casting a shadow of a low cloud onto the foothills of the Sangre de Christo range. Sun rays sneaking through gaps in the cloud - crepuscular rays - create alternate bands of light and dark.

Since this is happening opposite the sun, with the rays converging on the horizon, these are technically anti-crepuscular rays.

Truchas Peaks (NM) in the background in shadow. Taken from the Pajarito Plateau near Los Alamos, NM.