I have no idea what I'm doing with the voting process.
[x] ACTION: either feign retreat while we secretly return to scout out the situation, or fort up while we scout out the situation. Scout to determine whether there are actually dwarves on the inside, whether they've gone over to chaos, and whether they would actually want to leave.
[x] ACTION: Ask the local tribes to get confirmation of how long Cor-Dum has been here, and a story of how he arrived. Maybe send some Winter Wolves and Hubert(or just Hubert)somewhere to ask, Hubert knows Khazalid right? Or maybe send Johann?
[x] THEORY: The crater and missing mountains are due to Morghur translocating or teleporting here. Physical signs point to Morghur having been holding the area against nomad raiders for a very long time, and history implies that he's not been seen in the old world since approximately when Karag Dum would have come under attack during the Great War against Chaos. He's been here this whole time. Magical signs and, less reliably, intuition about Borek, point to there being something uncorrupted in that mountain in the middle. Theory continued: Borek expected Morghur, Morghur favors Borek, Borek isn't chaos-aligned(he had the chance to prevent us from acting on Vlag, but he didn't, and was, in fact, happy about the result). Obvious conclusion, Morghur is aligned with Borek in some way apart from alignment to chaos. Less obvious conclusion: Morghur is aligned with Karag Dum because he was a dwarf. That is to say, the first incarnation of Morghur was born a dwarf, far longer ago than merely 300 years ago. And Dwarf souls that never have the rites to send them to the underearth are ejected from the aether, and reincarnated into new bodies to live another life, over and over again. Morghur was originally a secret shame of Karag Dum, his first incarnation was a dwarf that went into the chaos wastes and was changed into what he is now. Possibly someone who followed Grimnir, then had the shame of coming back alive/having his soul corrupted by chaos down to the core so as to cause disaster when reborn, possibly someone else important to Karag Dum's history, important enough to remember rather than burying or forgetting to dull the shame. They have formed a pact with Morghur to defend them and probably isolate them from everything outside, but it is still uncertain whether they've actually fallen into corruption, maybe chaos dwarves now, maybe not.
[x] ACTION: Mathilde will infiltrate the hold and look for more answers. In the mean time the convoy should circle the Steam-Wagons and avoid provoking a fight they can't win. If she has not returned within 24 hours they should turn back and attempt to make their way back to civilisation to inform the Karaz Ankor, Empire and Kislev what they found.
[x] THEORY: Karag Dum has somehow tricked or compelled Morghur to fight the Kurgan tribes.
[x] THEORY: Through either Pact, Binding or some other venue the dwarfs of Karag Dum have installed Morghur as some form of defensive guardian, supported by the fact that Morghur is treating the mountain as a giant herdstone while to my vision it is not. The confounding factor here is that the energy flowing out of Karag Dum is uncorrupted. Morghur himself would almost certainly be using it for his own ends, so it means the occupants of the hold either don't know how to use it, don't care to use it or still consider themselves part of the Karaz Ankor enough that they let the energy flow uninterrupted.