Worst you've seen to the Defenses?

[Ringo5tarr]

What's the worst damage you've seen to/from a defense this year? Both Competition and Practice. Bonus points for pictures.
We at 1764 built some practice defenses, but never truly got to use them due to some bad time management, however we invited other teams to come over and use out practice defenses and goals while we kept working (while overall detrimental to the robot progress, it was rather effective at getting us chairmans at GKC) and one of the two teams managed to rip off the rock wall part of the rock wall, We got apology cookies at GKC though, so I guess it balanced out?