Keep on the Shadowfell
The road to Shadowfell Keep is arduous. Since the keep’s destruction, few travelers use the road and no one bothers to maintain the path. The road is overgrown with grass, ferns, and small trees. The keep isn’t in any better shape. Evidence of its destruction can be seen as you approach the derelict ruins.
Read or paraphrase the following when the adventurers come within sight of the ruined keep:
Ahead, the narrow track widens into a clearing. Great piles of shattered stone blocks and scorched timbers dominate the clear-ing, sprawling out from its center to the edge of the woods. No plants grow among the ruins or within the clearing. The ground is bare dirt, and although the forest has begun to reclaim the path leading here, it has not intruded into the ruins of Shadow-fell Keep.
Yet clearly someone has tampered with the ruins. In the center of the debris, stone blocks and timbers have been gathered into a pile. Someone has cleared a path through the rubble and pulled aside the wreckage to reveal a stone staircase. The stair-case descends into darkness._
As they enter the clearing of the ruins:
The dark forest surrounding you suddenly falls deathly silent. Animal and insect sounds have stopped… and even the wind has died down so that not even a leaf moves in the branches overhead. An unnatural cold sweeps through your body and the hairs on your neck raise as if you’re being watched.
Later, as the PCs explore the dungeon, explain that they hear distant moans and quiet footsteps. Think of tricks your mind has played when you’ve been home alone at night. Remember the sounds that made you just a little bit jumpy. Shadows flicker at the brink of the party’s light source, something stirs just at the edge of a character’s vision, and a sudden breeze chills the characters to their bones.