Typically Vaults end in what is informally referred to as a 'death room' or a 'danger room' where everything is being thrown at you — all the traps from the vault accumulated in one large room.
Traps in The Vaults are activated in Season 3: Season of Construct. The traps can not be deactivated so you must make your way across tentatively to preserve your stacks of Zoltun's Warding. Each trap you get damaged by removes one stack.