Inferno – “A fitting image for you” [Campaign 5, Mission 2]

Someone literally ran to me during the first week, so I had to act fast. :)

And I just didn't understand – we captured the second Haven castle, the gates opened, we captured the Necropolis castle, then we went through a passage (through a gorge) to a large territory. There are Necropolis castles and fortresses all around. What "second" Necropolis castle are we talking about?