Here is an experience that was posted on Erowid. Sorry I cannot quote the person as there is no name to quote. I thought I would post this as it is the best I have read so far...:
"I visually witnessed the room disappearing like an evanescent footprint on the sand slowly being washed away by the tide. Then there was total and immense darkness. And as though I was propelled by some inexplicable force, my body was rocketed forward in a horizontal motion faster than anything I could comprehend. Swirls of light danced around me and I saw particles of matter all around exploding into multicolored fragments. The terror I initally experienced was unfathomable. I felt like I was dying and that I had no control whatsoever. And at once, I surrendered to this death and in a sense celebrated it. As soon as I did this I saw a strange multi-limbed entity approach me on my left, swooping in and craddling my body as though I was an infant. It did not speak nor do I remember anything other than it had many arms. It was very warm and non-threatening and it spoke to me with its touch and nothing more. Its presence was extremely nurturing and it smiled with such seraphic peace and benediction.
The particles of light exploding around me, soft mercurial waves of color enveloping me and draping me with care, muslin arms holding me gently the universe expanding and contracting, angels dancing on effervescent stars, galaxies of light, sounds of butterfly wings burning, tendril tongues leaping like flames form a campfire, all derivations of geometrical patterns making reasonable the irrational.
Dewdrops slipping off of buttercups, a warm desert breeze, a cactus field of great saguaros and ox tongues swaying gently as sheets of stars pass above, careening archetypes appearing and disappearing in front of me: a Pirandellonian clown, a giant black horse with a honey colored mane, an archer with an inviting grin, ferries with dragonfly wings, a wizard with soft spoken eyes, a lascivious young siren licking my chest with a long slippery buttermilk tongue, a bengalian tiger with piercing luminescent eyes, an old man laughing, a young girl crying, an Indian inside a pueblo praying over a dying boy menstruating through his nostrils, a aft man on rollerskates, and a crone in a purple shroud reaching her old withered hand to me…the whole of humanity dancing naked amongst the gods and godessess of the storm. These images passed by me so fast yet each intricate contour of their bodies I remember so clearly. This lasted for what seemed hours and I calmly resigned to the incomprenibly beautifully changing aspect of the universe.
The world runs by rhythms we can’t possibly comprehend, and to make peace with that is the essence of being human. This I felt like no other time in my life. No other experience was remotely close to this. And the whole time this presence or perhaps God, the Great Spirit was holding me in the warmest of embrace. And slowly it brought me back to my corporeal existence in the room on the couch, so gracefully and elegantly. My body felt like a lithe dandelion floating effortlessly back to the ground. I began laughing joyfully at the unbelievable nature of my experience. I felt like I now possessed an uncanny wisdom so powerful and so essential to my being that I retained a wondeful sense of self-confidence and peace. And as I opened my eyes I saw the room as it once was before. There were strange geometrical patterns all around, yet I knew that I was back from wherever I went. My friends were there, smiling. I thought my god, how long were they there? How could they have waited with me so long, so reserved and peaceful? Hours had passes, so I thought.
And to my amazment looking at the clock, only 6 minutes (earth time) had passed! I meditated for about 10 minutes and then slowly got up and walked around. My heart was still racing but within 10 more minutes I was calm and collected. The only residual affect occurred about 8 hours later when I awoke with anxiety and in a pool of sweat. I had shivers and chills and I immediately got in a warm bath and slowly regained my composure.
I watched the sunset that morning from my bedroom window and I felt a strong fire from within me that produced so much happiness and determination. This fire from within I had never experienced and now that I have it, it carries me forth into the world with speed, agility, and a sense that the universe is indeed incomprehensible, and that no mathematical formula, no graph nor chart can possibly explain the infinitude and eternal changing manifestations of this endless flow of life. And this flow of life is joyous."
Meditate before you venture, take it seriously, use it as medicinal—it is good psychotherapy if needed. Realize that you, the Earth, others, and the Universe are all one and the same process. Then take that knowledge back to become, as you already are, one with nature. Eternity in every moment. Divinity in every particle. All is one organism.