Monolith of Ancient Sands

Prompt

A surreal desert landscape in 9:16 orientation rendered in deep sepia tones. At the center, a massive monolith of basalt rock stands on smooth sand. The bottom half is patterned with intricate swirling designs etched into the dunes like ancient symbols. Ghostly cacti with fine spine textures reach skyward in the lateral margins. The upper third features a twilight gradient with a crescent moon. Sparse shadows add depth. Header area is uncluttered for icon visibility. No watermark, no logo, no signature, no text, no UI, no mobile screen, no device frames, no interface elements, no artifacts, no borders, no margins, no cropping, no cut-off parts.