daytime sky filled with layered clouds

daytime sky filled with layered clouds. The clouds range in color from dark gray to light gray and white. A bright spot, possibly the sun, is partially obscured by the clouds. A small section of the clouds exhibits iridescent coloration, displaying a range of pastel colors. The location of the image is Zelenikovo, Bulgaria. There are no people or other specific objects in the frame. The main subject is the sky and clouds.