Watercolor Sunset over a Rusty Martian Plain

An expansive Martian plain at sunset rendered in delicate watercolor washes. The sky shifts from warm coral and peach near the horizon to cool violet and blue higher up, with the setting sun casting a pale blue halo. The ground is rust-red desert dotted with rounded rocks and layered sandstone ridges, dust wisps curling in the still air. Distant silhouettes of Olympus Mons and other volcanoes loom along the horizon. The watercolor is wet-on-wet, edges bleed softly, giving a dreamy, ethereal feel; subtle grain and speckled texture evoke Martian dust. Overall mood: serene, contemplative, otherworldly.