OMG, where is that. I want to sit in that green spot.... That would be my happy place =) With epoxy earplugs and under the assumption the pressure waves wouldn't kill me outright. I could probably tell you the phase shift from right to left channel by the way the hair stood up on my arms =)
I've been to a few raves, always wear earplugs, always stand right in front of the biggest bass speaker I can find. It's like nirvana for me, no drugs needed as long as the sound is clean.