There is dream I had couple months ago that relates to idea of abyss. When I first read this thread,I immediately thought of this dream.
It started as sleep paralysis experience(I have these from time to time,and it's good chance their cause is connected to the ''Abyss'')
I tried to resist the paralysis and while it was happening, it seems I fell in dream in an instant,without realizing it at first.
I was in my house in the hallway. Then I became aware I'm dreaming and thought that the paralysis experience might still be in progress.
What happened then is,I was standing in the hallway and in front of me was tall dark figure pointing his forefinger towards me as if he was giving me orders.
I feared to look at him for some reason, but somehow I got strength to look at his face and I saw he has my face,it was me!
Only his eyes were very negative,like glowing with hate. There were all possible negative emotions in his eyes,not to mention the feeling I got from him.It was like he radiated negativity.
That whole thing didn't last much long and then I literally started to shrink in size in front of the dark man figure and then I woke up.
Funny thing is that the place in hallway where I was standing in dream is place where I stand in reality in front of the big mirror,and mirror is in the same place where my dark twin was standing.
Have I maybe had a glimpse of the Abyss? My opinion is that I have,especially since description of PCS personality fits my profile. Thank you