smashup

noun

1. (informal)An abrupt, damaging breakdown or failure.
2. (informal)A violent collision involving one or more vehicles.
3. An instance or the result of smashing; that which has been smashed into pieces.

   “I discovered that a lot of imported drainage-pipes for the settlement had been tumbled in there. There wasn’t one that was not broken. It was a wanton smash-up.”