Make a pencil drawing of the following scene: A dark tunnel where several cats press against the stone wall as a giant, glowing eye of a train is visible. Wind sweeps through the tunnel, swirling dust as the cats show fear and excitement. Tigerheart, a majestic cat, holds a trembling kit tightly. The atmosphere is tense as the train rushes by with a deafening roar. The surroundings are in dark tones, with a hint of light illuminating the scene. Show the train approaching.