The wild, northernmost wood of Karrnath is a subject of active exploration, with both government and private sponsors surveying the region for undiscovered resources and good spots to build new settlements. This of course is not the first-time people have attempted to settle the Icewood—the previous attempt in the eighth century was wiped out by boneclaw wyverns raised from the dead by Lady Illmarrow. Recently, an enormous Khyber shard known as the Madstone has begun to call people to it, transfiguring them into gibbering servants. Other, as yet undiscovered horrors might lurk in the woods—the Forest Queen is rumored to take on a harsh and exacting persona within the weald.
Source: Cultures of Karrnath