OOC: Thanks, guys! I assume by 'tower' you meant the keep?
The road to the keep is arduous. Since the keep's fall, few travelers use the road to the north, and no one bothers to maintain the roadway. It is overgrown with weeds, grass, ferns, and small trees. Soon enough, you can make out the ruins of the keep. Ahead, the narrow track widens into a clearing. Great piles of shattered stone blocks and scorched timbers dominate the clearing, 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. Although the forest has begun to reclaim the pat leading here, it has not intruded into the ruins of Shadowfell 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 leading underground to the south. It descends into darkness.