An airbrushed dune curving in one unbroken sweep across the frame and meeting a smooth black lava ridge, both surfaces clean untextured gradient. Deeply saturated blue sky above, pale apricot sand below. One thin line of light along the crest. Painted rather than photographed. smooth airbrush render, soft gradient shading, every surface an unbroken gradient, edges crisp throughout, deeply saturated blue-against-red palette, hard specular highlights