It was more like a 'feeling' than a dream... and now it strikes me quite like an unpleasant trip... kind of insidious and sort of 'transitionally' outright terrifying.
The best I can describe the feeling was that it was like a steady drop of water in a vast, empty, dark chamber suddenly turning into an overwhelming, annihilating flood. But I would see nothing.
I would wake up in sort of a half-conscious, stunned terror and couldn't calm down.. my Mother would eventually give me some congnac or whisky before I would stop trippin.
Wouldn't doubt AT ALL if DMT was involved in some way. Hasn't happened in over 25 years.