human
Please generate a brief description of a dreary scene inside a cavern with a vein of iron ore in the floor.
assistant
Designed to show off the stonecutters' skill and the natural beauty of the granite, this room resembles the center of a pyramid with three triangular walls sloping to meet at a point overhead. The stonecutters left the grey marble rough, polishing only the corners in order to accentuate the distinctive shape of the room. A small vein of iron ore lies exposed in the floor, its surface beginning to rust in the damp air.