I mean, I dunno if it was chance or placebo or what, but I had my most intense experience yesterday waiting 20 min after consuming two chewable Vitamin C pills. I found myself in the center of what seemed to be an egyptian pyramid with pharoah and sphinx like figures quickly moving through each other in crazy inter-dimensional ways. The whole trip seemed to be taking place in fast forward as well. When I opened my eyes I saw patterns you'd see on an Indian or Chinese tapestry with intricate interlocking threads of green and red. It was also notably more euphoric than usual, but I don't feel that it was placebo (although of course it could've been) because during the trip in the intensity of the moment, I had completely forgotten all about the vitamin C pills about 3 seconds after take-off.
"Science without religion is lame. Religion without science is blind" - Albert Einstein
"The Mighty One appears, the horizon shines. Atum appears on the smell of his censing, the Sunshine- god has risen in the sky, the Mansion of the pyramidion is in joy and all its inmates are assembled, a voice calls out within the shrine, shouting reverberates around the Netherworld." - Egyptian Book of the Dead
"Man fears time, but time fears the Pyramids" - 9th century Arab proverb