(The items) include a 28-centimetre-long leather bag, a pair of wooden snuffing tablets, a snuffing tube, a pair of llama-bone spatulas, a textile headband, fragments of dried plant stems and a pouch made from three fox snouts stitched together. The snuffing tube and tablets feature ornate carvings of human-like figures.
Melanie Miller at the University of Otago, New Zealand, and her colleagues used mass spectrometry to analyse samples from the pouch and plant stems. They detected five psychoactive compounds: cocaine, benzoylecgonine (BZE), bufotenine, harmine and dimethyltryptamine (DMT).
The presence of these drugs suggests the pouch may have belonged to a ritual specialist or shaman with extensive knowledge of plants and their psychoactive properties, and used to hold leaves, seeds and other plant matter.
More in the scientific paper: "Chemical evidence for the use of multiple psychotropic plants in a 1,000-year-old ritual bundle from South America" (PNAS)