That's a fairly short tunnel - there are some in the Alps that are several miles long. The Eisenhower Tunnel on I-70 west of Denver that goes through the Continental Divide is also pretty long. I remember quite a few shorter tunnels in West Virginia - we used to go there every year when I was growing up.
Enjoyed doing this one, and I think this is the first time I have used this type or shape to do a jigsaw and at least one can see the light at the end of the tunnel. A big thank you team for this one. Santa.