Winterhaven is a sleepy village of about 1000 in the northwest of Nentir Vale, at the foot of the Cairngorm Mountains.
The primary feature of the Winterhaven area is Shadowfell Keep, an ancient ruin built upon a rift to the Shadowfell. Creatures from the keep continually attacked Winterhaven, in order for a cult of Orcus to establish dominion over the area.
Your party traveled to Winterhaven from Vakr, to complete various quests. One of these quests was to defeat the Orcus cult and clear the keep of monsters.