Travelling in far-flung countries was at one time still a real adventure, at times dangerous and risky. It was about diving into the unknown which was there to be discovered. Dr. Pircher travelled to the remotest areas of Guatemala, Honduras, Bolivia and Panama to pursue his scientific curiosity as a hydraulic engineer and adventurer. Time and again on all these journeys he came across ancient tribes deep in the jungle and learned about the cultures of the indigenous people. He was able to observe these people, far removed from civilisation, to listen to them and in particular to learn from them. What was really fascinating to him was that all these different tribes had a strong similarity with their ceremonies and spiritual rituals. There were people with a very specific self-awareness, people who followed their instincts in many situations and who trusted their gut instinct – curious and fearless, impassioned and untroubled, with a very special sense of belonging and yet individual and unique. And they had one thing, their mysterious potions brewed from a range of roots ...and leaves to chew on.