I have never ingested DMT, so thanks for the interesting write up. Salvia Divinorum is another psychedelic that might can produce incredibly strong visuals. It is the most potent naturally occurring hallucinogen, and produces far stronger hallucinations than LSD or mushrooms. As with DMT it is very short lived, the effects lasting around 5-10 minutes. It was used in shamanistic ritual, so perhaps it also offers the same spiritual/metaphysical properties. However my environment wasn't really ideal for introspection so I didn't experience that side of things.
