[Al Skierkiewicz]

inou8it,
This is one of the worst fall induced damages I have seen. I would take that battery to a recycler ASAP. As other have pointed out, the internal plates on that cell are near short and when that occurs, high heat and possible case failure will result. If you think you can safely discharge the battery prior to handling, I would recommend that. If you can connect it to an auto headlight until the battery is dead, you will have less chance for further case damage and acid spill.