Trudvang Legends: Muspelheim

From BoardGameGeek:

Trudvang Legends: Muspelheim is an expansion that features an all-new campaign that takes place deep below the surface of Trudvang, in the Dwarven kingdom of Muspelheim, represented by a new game board where Heroes below the surface can travel to face new encounters. With the great Bjorvolog gate shut and the northern cities suffering under constant attack, unrest may lead to a civil war, threatening thousands of dwarves. New enemies, new heroes, and a brand new campaign to unveil and stop sinister forces at work await you in Muspelheim! -description from the publisher