Blue Cartoon Train Entering Tunnel

A charming cartoon illustration shows a blue and light blue train positioned next to a sturdy green tunnel, looking as if it's about to embark on an adventure through it. The train features four cars with simple rectangular white windows, and its engine has a single yellow front light. Above the tunnel's entrance, a whimsical swirl of light blue cloud-like shapes adds a touch of playful detail.

train - tunnel - cartoon - blue - green - railway - transportation