Two astronauts traverse the barren landscape of a distant alien planet, one clutching a sophisticated visualization device that emits a faint, ethereal glow. Beside them looms an enigmatic alien structure, its design both ancient and advanced, with a series of strange footprints leading ominously toward its entrance. The scene is captured in a concept art style reminiscent of digital paintings, with a focus on futuristic realism. The background is flat, with minimal details, rendered in low-saturation hues, evoking the unique style of Enki Bilal. The overall composition maintains an air of mystery and intrigue, inviting viewers to imagine the secrets held within this alien world.