DMT is a plant extract, chemical is also found in humans in smaller amounts... Di-Methyl-tryptamine. Botanist Terence Mckenna talks a lot about it. The scientist that first did experiments with it called it 'the spirit molecule'. basicaslly if you smoke it, it gives an out of body experience and people often talk to dead relatives or feel that they visit this 'waiting room' before heaven. all sorts of other very strange and unusual stuff, but yeah I remember when I came across Eben Alexander's stuff I found it fascinating as well.