Originally Posted by TombRaiser
But, I warn you that after you do the quest "Rise in the East" Do not fast travel back to Japhet's Folly, because you will never
be able to fast travel anywhere else from that location. The whole island is outside of the world and once you finish this quest the door that you used to leave Japhet's Folly will no longer be available....
...For more info check out the UESP notes. HERE
I've added this info to the places to avoid section in this thread...
It's something everyone should be aware of, so thanks for bringing it up.