This is a video of the inside of a kiln or furnace, showing a contained fire with flames erupting from a horizontal opening in the back wall. The interior is made of rough, textured material, likely refractory brick, and is illuminated by the orange glow of the fire. There are two dark openings in the lower part of the back wall, possibly for air intake or exhaust. The floor appears to be made of brick or tile. The video is shot from an entrance, with the sides of the opening framing the scene. The fire is active and dynamic, with bursts of flame.