Six-Pack - At the Dungeon Entrance

Perhaps we aren't the first ones to find this dungeon...

1d6	At the Dungeon Entrance
1	Rocky fort - Someone has cleared the high ground and built a one and a half yard tall drystone wall around the a perfect base camp sized area. There is also a primitive lean-to big enough to keep people and supplies out of the rain. There are no footprints and by all signs this rocky fort hasn't been used in some time.
2	Wooden Palisade - A wooden palisade has been built on the high ground. It looks like a wild west fort with one side torn open but repairable. Inside there are two wooden buildings that lack roofs. It looks like someone used this place for some long term exploring before they were killed or the place as abandoned.
3	Primitive Moat - Someone built a dam in the stream which backed up the river making the area  swampy and difficult to cross. On a small island in this morass is a small wooden platform.
4	Wooden Tower - A broad wooden tower was built not far from the opening. The bottom floor is big enough for a wagon and horses. It is also covered in dried horse dung but there are primitive bunks on the second floor (accessed by a ladder).
5	Tree Fort - A small platform was built up in a tree. It is big enough for two people and some supplies but certainly not for horses.
6	Ruins - The remains of a basecamp are clear but it's been destroyed. Burned out and torn down. Blood and bone are everywhere. Torn up tents are on the ground but everything worthwhile is gone. At GM option a single survivor might be around somewhere to tell the tale.