Cartoon Castle in a Mine Cavern

A whimsical cartoon-style castle built inside a vast underground mine cavern. Colorful stone towers with rounded shapes, fluttering banners, and a drawbridge spanning a glittering mineral stream. The cavern walls glow with crystals and are supported by chunky wooden beams, with rusty mine carts on rails and lanterns casting warm light. Cute dwarves and a tiny knight explore along cobbled tunnels as friendly bats flutter overhead. Bold black outlines, saturated colors, and soft shading create a playful, child-friendly fantasy scene from a slightly elevated perspective.