Bufo Alvarius: The Underground Secret (2018) Subtitles
- Genre(s) : Documentary
- Country: Czech Republic
- Release year: 2018
- Duration: 1h 18m
- Director(s): Filip Zaruba
- Actors(s): Stanislav Grof
- Trailer : Watch
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Synopsis:
A radical testimony of the strongest known natural psychedelic, tryptamine 5-MeO-DMT produced by Bufo Alvarius, a toad of the Sonoran desert.