This was my tunnel:
I worked hard on my tunnel. It was a work of art, an engineering marvel!
Last weekend, my Grandpa came to visit. We had lots of fun but somehow THIS happened to my tunnel:
Mom says it took 440 pounds of concrete to fill in my tunnel. However, while she and Grandpa were working on that, I had a breakthrough while thinking about tunneling, and that evening I tried a new method: tunneling PERPENDICULAR to the fence. Mom was cooking dinner and the doorbell rang, and there I was with my buddy the neighbor! Boy, was my mom surprised!
Unfortunately, that tunnel now looks like this: