After defeating the titan, traveling from the Mournlands is relatively simple. Tracker gains his bearings and quickly leads the group through the dead-gray mist. Two days and two nights pass on the journey, looking for any signs of civilization. Through some backtracking, eventually a path is discovered. It is a deep rut in the ground, as if some hemisphere had dragged itself through the raw earth at tremendous speed, spraying mounds of dirt and stone across the landscape. Whatever did this, it certainly left an easy to follow path in its wake.
Following the path, you eventually see in the distance a very odd sight. It appears that the entire village is covered in a thick layer of glass! It coats the ground. It cascades from the shattered stone walls. Toward the center of the village, one or two buildings appear to be more intact than the rest of the ruins around them. Two other sights leap out at you as you look around. First, you can see the occasional forms of burned dwarves buried within the glass, their expressions twisted in fear and pain. Second, someone has been breaking the glass around some of the ruins, shattering it as though searching for something that may have been trapped within it when the glass cooled and hardened.
Yahjhank realizes what happened:
Back at Whitehearth, you noticed a molten glass construct. Yahjhank believes that the molten glass construct is just the remains of a device malfunctioning on the Day of Mourning. The device had something to do with glass, and when it malfunctioned, it spewed molten glass far enough that it covered this town!