Walkthroughs for Campaigns and Maps in WoGA.

Please advise... In the 2nd mission of the In the Wake of Gods campaign (gorynych), I captured both cities: the elven city and the fortress. Now, snipers refuse to join me, but that's okay; I have a different problem – I can't enter the Necropolis. A single, insignificant tree blocks the path. I read somewhere that after visiting the monk, it should disappear and clear the passage, but nothing happens. The monk tells me to go and do a good deed, and my hero says something like, "I wonder what that could be." Maybe I haven't done something else? I'm also confused by two fanatics: one guarding a chest and shouting that the path is forbidden to ordinary people, and the other standing near the red hero, warning that the three-headed monster might be dangerous, while the hero just stands there... what should I do?