4th Edition Scales of War AZ
The Shadowfell is a dark echo of the natural world. It touches the world in places of deep shadow, sometimes spilling out into the world, and other times drawing hapless travelers into its dark embrace. It is not wholly evil, but everything in the Shadowfell has its dark and sinister side. When mortal creatures die, their spirits travel first to the Shadowfell before moving on to their final fate.
The Raven Queen’s palace of Letherna stands in the Shadowfell.