LSD
It's a lysergic acid extracted from fungus and manifactured in laboratoires ..
It's the longest trip known and last for 9 to 12 hours .. Once u have taken thé drog u will hallucinate seeing things move in an irrugeler way, lights are more brights HD and sounds are translated into waves in diffrents colors
It a Nice trip to go .. But sometimes it's an open gate to hell
A bunch of LSD trip reports! https://erowid.org/experiences/subs/exp_LSD.shtml