Oh the Horror!

Actually I like crashes as long as nothing gets broken!  Must be something wrong with me.  Anyway, I was weeding the garden and had one train running in a loop, that was all. No problems until I decided to grab a snack. (the irony is while I was inside, I was actually thinking how good the train was going, that will teach me) When I came out, disaster had struck!    My forensic reconstruction (or my wild guess) is the work caboose became uncoupled and the rest of the train completed the loop and ran into the back of it.   When will I learn, Huh?