Remains of high-THC cannabis discovered in 2,500-year-old funerary incense burners in the Pamir Mountains is the earliest known evidence of psychoactive marijuana use. It was likely used in mortuary ceremonies for communicating with the dead.

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Remains of high-THC cannabis discovered in 2,500-year-old funerary incense burners in the Pamir Mountains is the earliest known evidence of psychoactive marijuana use. It was likely used in mortuary ceremonies for communicating with the dead.