Stuck

Kalena came in from the yard a few minutes ago to inform me that Will was "stuck in the tunnel."  We don't actually have a tunnel in our yard, but she tends to call hallways tunnels, so I figured she meant he was out behind the shed.  (There's a narrow space between the shed and the fence.)  I also figured he wasn't actually stuck since a) I didn't hear him crying and b) there is plenty of room for me to walk behind the shed so how would a much smaller person get stuck?

Here's how:

He was a little disgruntled about the whole thing.