Best-selling Swiss author Erich von Daeniken, who built a lucrative career on his argument, rubbished by scientists and archaeologists, that humanity owes much of its development to the intervention of extraterrestrials, has died aged 90. Erich von Daeniken, creator of the planned Mystery Park near Interlaken addresses a a news conference in Bern, Switzerland October 28. Daeniken announced that Mystery Park will got to the bourse. The shares of the leisure and education park will be traded in Bern and Berlin from November 1.