Caballero montando un dragón sobre el puente de un castillo volcánico

Fantastical, otherworldly, surreal digital painting in the style of volcano dark epic fantasy concept art. A mystical, ancient volcano castle built into the crater's edge, with structures carved from obsidian and adorned with glowing crystals. An ornamental obsidian bridge spans over the caldera. Below is a river of lava. On the bridge is a knight in black armour riding a black dragon. Waterfalls of molten lava cascade into the caldera below, while winged creatures soar through the ash-filled sky. The scene is rendered in a high fantasy style, reminiscent of epic book cover art, with a focus on grand scale and magical architecture. Dramatic lighting, shallow depth of field, 8k resolution, high quality.