Clouds like this remind me of a painting; the light and dark tones give that feeling of depth and dimension. They intermingle and form shapes that can range from abstract to actual forms that might resemble something familiar. I suppose that is why people sometimes see things in the clouds that aren't really there. I just enjoy watching the flow as the clouds whisp across the sky, leaving me with images that I could not create without them.
very nice pics! i also enjoy taking pictures of clouds.