battery cable

alright, in continuation of the problems with my sisters jeep. the negative battery cable bolt corroded through and is no more. i'm trying to locate a bolt to replace it, but should i fail to do so, where does the ground cable run to after it leaves the battery?

alright, in continuation of the problems with my sisters jeep. the negative battery cable bolt corroded through and is no more. i'm trying to locate a bolt to replace it, but should i fail to do so, where does the ground cable run to after it leaves the battery?

which bolt? the bolt that holds the clamp to the wire or the bolt that holds the clamp around the battery terminal?