fire burning in a confined space, possibly a forge or fireplace

fire burning in a confined space, possibly a forge or fireplace. The flames are bright orange and yellow, flickering and reaching upwards. Embers glow below, resting on a bed of dark, unidentifiable material. A few sparks rise with the flames. The interior walls of the space are a deep red color. The scene is generally dark, with the fire as the primary source of light.