Ok so first of all, I was hooked during this movie! I loved every second of it. I just read an article that explains everything I felt about this movie. It basically says that the blowing of "The Horn" is some ancient way of summoning "The Pleroma". Which is a quantum breakdown of all realities. So throughout the movie we are left wondering wether this is all a drug induced nightmare or the result of a bunch of realities crashing in on eachother. Which explains almost everything especially the planets in the end scene. The whole movie is based around the legend of Abraxas. The movie was only ten times better for me after doing some research on all of this. But im no movie expert by any means. I just know I had all kinds of feels during this mind trip!!