Residue found in tombs deep in a Central
Asian mountain range suggests that strong cannabis was used in ancient burial
rites.
By
Jan Hoffman
 |
|
Dense patches of wild
cannabis grow across the mountain foothills of Eurasia
from the Caucuses to East
Asia. These plants were photographed growing
in the Tian Shan
Mountains of Kazakhstan. Credit Robert Spengler
|
An association between weed and the dead
turns out to have been established long before the 1960s and far beyond a
certain ur-band’s stomping grounds in San Francisco.
Researchers have identified strains of
cannabis burned in mortuary rituals as early as 500 B.C., deep in the Pamir
mountains in western China, according to a new study published Wednesday. The
residue had chemical signatures indicating high levels of tetrahydrocannabinol
(THC), the plant’s most psychoactive, or mood-altering, compound.
You think the Grateful Dead were the first to
wonder “what in the world ever became of sweet Jane?” That CBD gummies to
assuage the anxious are anything new? That puffs of elevated consciousness
started with Rocky Mountain highs?
Nah.
“Modern perspectives on cannabis vary
tremendously cross-culturally, but it is clear that the plant has a long
history of human use, medicinally, ritually and recreationally over countless
millennia,” said Robert Spengler, an archaeobotanist at the Max Planck
Institute for the Science of Human History in Jena, Germany, who worked on the
study.
Cannabis stems and seeds had previously been
found at a handful of burial sites around Eurasia, but the evidence at the
Pamir cemetery, verified by advanced scientific technology, shows an even more
direct connection between the plant and early ritual. The new findings expand
the geographical range of cannabis use within the broader Central Asian region,
said Mark Merlin, a professor of botany at the University of Hawaii at Manoa,
who did not work on the research.
“The fact that strongly psychoactive ancient
residue has been documented in laboratory testing is the key new finding,” said
Dr. Merlin, a cannabis historian. He hypothesized that “It was used to
facilitate the body communicating with the afterlife, the spirit world.”
The study was published in the journal
Science Advances. The research team included archaeologists and chemists from
the Chinese Academy of Sciences and the Chinese Academy of Social Sciences in
Beijing.
About 70 artifacts have been retrieved from
the Pamir burial site so far, including glass beads, harps, pieces of silk and
wooden bowls and plates. Perforations and cuts in some skulls and bones could
suggest human sacrifice.
“We can start to piece together an image of
funerary rites that included flames, rhythmic music and hallucinogen smoke, all
intended to guide people into an altered state of mind,” the authors wrote in
the study.
Ancient mourners apparently created the smoke
by placing hot stones in wooden braziers — receptacles for flaming objects —
and laying in cannabis plants, the researchers wrote. The residue was found on
the insides of 10 braziers and on stones exhumed from eight tombs in the
2,500-year-old Jirzankal Cemetery.
The chemical signatures were isolated and
identified through a procedure known as gas chromatography-mass spectrometry.
Although cannabis seeds have been found in a
few other sites, no such seeds were found here. Archaeobotanists theorize that
either the seeds had already been removed and discarded or that mourners
deliberately chose nonflowering plant parts, such as stems, for the rituals.
Among the provocative questions raised by the
findings are how and why mourners singled out the higher potency strains. Wild
cannabis, which grows commonly across the well-watered mountain foothills of Central
Asia, typically has low levels of cannabinol, a metabolite of THC, the
researchers wrote.
Instead, these higher THC levels suggest that
“people may have been cultivating cannabis and possibly actively selecting for
stronger specimens,” they added.
Another possibility, they said, is that
traders may have unwittingly caused hybridization as they moved plants along
the Silk Road routes through the high mountain passes of the remote Pamirs,
which connected regions of what are now known as China, Tajikistan and
Afghanistan.
The tombs varied in size as well as the
number of bodies, prompting researchers to wonder whether the ritualistic use
of cannabis for mortuary rites had spread to common folk from being an
exclusive practice for elite tribal leaders and priests.
These tombs have a distinctive appearance,
the researchers noted. They are separated by rows of black and white stones,
the purpose of which is unknown. Individual burials are within round mounds,
additionally marked by stones.
Use of two parts of the cannabis plant —
fibers for hemp rope, sail canvas (a word derived from “cannabis”) and
clothing; oily seeds for food — stretches back about 4,000 years. Those plants,
however, have low THC levels. According to Dr. Merlin, cannabis seeds attached
to pottery shards found in Japan have been dated to roughly 10,000 years ago.
But ancient evidence of the plant’s utility
for medicinal and ritual purposes is scant and more recent. (By contrast, the
historical record about the use of opium poppy and peyote is relatively ample.)
Another possibility, they said, is that
traders may have unwittingly caused hybridization as they moved plants along
the Silk Road routes through the high mountain passes of the remote Pamirs,
which connected regions of what are now known as China, Tajikistan and
Afghanistan.
The tombs varied in size as well as the
number of bodies, prompting researchers to wonder whether the ritualistic use
of cannabis for mortuary rites had spread to common folk from being an
exclusive practice for elite tribal leaders and priests.
These tombs have a distinctive appearance,
the researchers noted. They are separated by rows of black and white stones,
the purpose of which is unknown. Individual burials are within round mounds,
additionally marked by stones.
Use of two parts of the cannabis plant —
fibers for hemp rope, sail canvas (a word derived from “cannabis”) and
clothing; oily seeds for food — stretches back about 4,000 years. Those plants,
however, have low THC levels. According to Dr. Merlin, cannabis seeds attached
to pottery shards found in Japan have been dated to roughly 10,000 years ago.
But ancient evidence of the plant’s utility
for medicinal and ritual purposes is scant and more recent. (By contrast, the
historical record about the use of opium poppy and peyote is relatively ample.)
Investigators have long tried to confirm or
refute the ancient world’s only known recounting of funereal cannabis use.
Around the fifth century B.C., the Greek historian Herodotus described a
Scythian mourners’ rite:
…
when, therefore, the Scythians have taken some seed of this hemp, they creep
under the cloths and put the seeds on the red hot stones; but this being put on
smokes, and produces such a steam, that no Grecian vapour-bath would surpass
it. The Scythians, transported by the vapour, shout aloud.
In the mid-20th century, researchers found
artifacts in a frozen burial site that seemingly comport with Herodotus’s
account, in Russia’s Altay mountain region near the Siberian and Mongolian
border. Close to the bodies was a fur-lined leather bag with cannabis seeds, a
bronze cauldron filled with stones and the frame of what seems to be an
inhalation tent.
Dr. Merlin said that the Pamir cemetery,
together with other relatively contemporaneous burial sites elsewhere in
Xinjiang province, strengthens a striking narrative about how cannabis was used
ritually by local cultures. North of the Pamir cemetery and from roughly the
same period, other researchers identified a container with about two pounds of
chopped cannabis next to the head of a body believed to be a shaman, presumably
to use for herbalist concoctions in the afterlife.
At yet another grave, also about 2,400 to
2,800 years old, in the dry desert of Xinjiang, researchers recently discovered
a man about six feet tall buried with “13 cannabis plants gathered at their
base and spread across his breast like a bouquet of roses,” Dr. Merlin said.
The array has also been described as a “cannabis shroud.”
“I think the evidence from the Pamir site
connects cannabis as a ‘plant of the gods,’ ” he said. “And that people
recognized for it to be effective, you had to cook or burn it.”
Jan Hoffman is a health behaviors reporter
for Science, covering law, opioids, doctor-patient communication and other
topics. She previously wrote about young adolescence and family dynamics for
Style and was the legal affairs correspondent for Metro. @JanHoffmanNYT
