Cráter de volcán alienígena extinto con paredes verticales de basalto

Static, documentary-style scene of the mouth of an extinct volcano on an alien planet. Geologically dead volcano, completely inactive, cold for thousands of years. No eruptions in progress, no volcanic activity, no visible lava. View from the edge of the crater. The first three hundred meters form a perfectly vertical gorge composed of black glassy basalt. The basalt is cold, solid, compact but unstable due to mechanical fractures. Rock formed from ancient lava flows that are now completely solidified and mineralized. Dark, opaque surface, partly shiny like cold obsidian. Dry cracks, mineral stratifications, sharp edges, rocky debris accumulated on the ledges. The interior of the gorge is dark but not incandescent. No light coming from underground. No magma. No glow. Motionless, silent atmosphere, free of smoke or emissions. Pale alien sky, cold and diffused natural light. Feeling of geological abandonment, absolute quiet, sterile and ancient environment. Photorealistic, highly detailed, realistic basalt textures, cold natural lighting, depth of field, monumental scale, realistic cinematic rendering.