Create a floating hamster-skull island approx. 144x144x24m. Terrain with smooth, layered topographic ridges shaped like a stylized hamster skull, plush clay textures. Add 4 subtle cave entrances: beneath chin, left cheek base, rear skull base, and a hidden eye socket exit. Include clear paths and tunnels smoothly winding upward, reconnecting to island's top. Low-poly, optimized for game import into Nifty Island. Set origin at bottom-center (0,0,0), orientation Y-forward, Z-up. Cartoonish plush aesthetic, clean geometry.