Underground fantasy environment, massive enclosed cavern. A single towering rock pillar pierces through the cave ceiling, with carved residential structures embedded into the stone, forming a vertical settlement. From the upper left, a cold natural light source enters through an opening, with visible ice formations and frozen surfaces around the light shaft. Following the rule of thirds, on the right side stands a temple dedicated to crystal worship, built from stone and integrated into the cavern environment. Below, a deep chasm separates the foreground and midground, ending in hardened lava rock formations. Scattered throughout the scene are glowing red crystal formations, embedded in the ground and walls, acting as secondary light sources and indicating areas of volcanic activity. Strong contrast between cold blue light from above and warm red glow from crystals. Clear foreground, midground, and background separation. Cinematic composition, large scale, high detail, realistic materials, moody lighting, volumetric light beams, no characters.