Mushrooms in Art, Literature, and the Collective Unconscious

Somewhere in southeastern Algeria, in a sandstone mountain range called Tassili n’Ajjer that rises from the Sahara like the ruined spine of a world that used to be green, there is a cave painting of a figure that has been argued about for half a century.

The figure is humanoid. It is tall — perhaps nine feet in the original scale, though scale in Neolithic art is a fluid concept. Its body is covered in what appear to be small, cap-shaped growths. Mushrooms. Dozens of them, sprouting from the shoulders, the arms, the torso, the head. The figure’s hands are raised, each clutching what looks like a mushroom. It stands among other figures — smaller, more clearly human — in what appears to be a scene of communal activity. Dance. Ceremony. Something shared.

The painting is approximately 9,000 years old. Possibly older. It was made during the Saharan Wet Period, when the land that is now desert was green savanna, populated by cattle herders whose rock art fills the Tassili caves with thousands of images — hunting scenes, pastoral scenes, swimming scenes, scenes of a world that no longer exists anywhere outside these walls.

The “mushroom shaman” figure — the name is an artifact of interpretation, not of the artists — was brought to widespread attention by ethnobotanist Giorgio Samorini in the early 1990s and has since become one of the most reproduced images in psychedelic culture. It is printed on t-shirts. It appears in documentaries. It is cited in arguments about the deep history of human-mushroom relationships with a certainty that the image, honestly assessed, does not quite support.

Because here is the thing about art that is nine thousand years old: it does not come with a caption.

The growths on the figure might be mushrooms. They might be body paint. They might be scarification. They might be a representational convention we no longer have the cultural context to decode. The figure might depict a shaman in communion with Psilocybe species. It might depict a herder in a ceremonial costume. It might depict something we cannot imagine because the cognitive and symbolic world of Saharan Neolithic peoples is, in many respects, permanently inaccessible to us.

What we can say: a human culture, nine millennia ago, painted a figure whose body was merged with what appear to be fungi, in a posture that appears to be ecstatic, in a context that appears to be ceremonial. And that image — whatever it “means” — begins a visual tradition that has not stopped. From Tassili to the Aztec codices to Alice’s caterpillar to Alex Grey’s paintings, humans have been depicting the mushroom-consciousness interface for as long as they have been depicting anything.

Nine thousand years of humans drawing what mushrooms do to the inside of a human head. That, at least, is not debatable.

Xochipilli and the Aztec Mushroom Stones

The evidence becomes less ambiguous in Mesoamerica, where the archaeological record is richer, the cultural context better documented, and the connection between mushrooms and sacred art more explicitly established.

The Aztec and Mixtec civilizations of pre-Columbian Mexico possessed a sophisticated entheogenic pharmacopoeia. Psilocybin mushrooms — called teonanacatl, “flesh of the gods” or “divine mushroom” — were consumed in ritual contexts documented by Spanish colonial sources. The Franciscan friar Bernardino de Sahagun, in his Florentine Codex (compiled 1545-1590), described mushroom ceremonies in extensive and frequently horrified detail: “The first thing to be eaten at the feast were small black mushrooms... they danced, they wept... some saw themselves dying in a vision... some saw themselves being eaten by a wild beast.”

But the visual art tells a richer story than the colonial texts.

Xochipilli — the “Prince of Flowers” — is an Aztec deity associated with art, beauty, dance, games, creativity, and sacred intoxication. A remarkable stone statue of Xochipilli, dating to the late Postclassic period (roughly 1200-1521 CE) and now housed in the Museo Nacional de Antropologia in Mexico City, depicts the god seated on a pedestal, his body and throne carved with representations of psychoactive plants.

Ethnobotanist R. Gordon Wasson and his colleagues identified several of the carved plants: Nicotiana tabacum (tobacco), Heimia salicifolia (sinicuichi), morning glory seeds (Turbina corymbosa, containing LSA), and — most significantly — what appear to be psilocybin mushrooms, likely Psilocybe aztecorum. The god of flowers, beauty, and creative ecstasy is literally encrusted with entheogens. His divinity is botanical. His transcendence is pharmacological.

Older still are the mushroom stones of Guatemala and southern Mexico — carved stone figures, typically depicting a mushroom cap atop a human or animal figure, dating from as early as 1000 BCE through the colonial period. Over two hundred mushroom stones have been recovered. Their function is debated — ritual objects, calendar markers, representations of deities — but their form is unambiguous. A mushroom. A person. A merging of the two.

The Mixtec codices — pre-Columbian screenfold manuscripts painted on deerskin — depict mushroom-deity imagery with a directness that makes interpretation relatively straightforward. Gods are shown holding mushrooms. Human figures are depicted consuming them. The iconography is consistent across multiple codices and time periods. Whatever the mushrooms meant to these cultures, the meaning was important enough to record in their most sacred documents.

Alice, the Caterpillar, and the Mushroom That Got Away

In 1865, Charles Lutwidge Dodgson — an Oxford mathematician who wrote under the name Lewis Carroll — published Alice’s Adventures in Wonderland, a children’s book that would become one of the most analyzed texts in English literature. In Chapter V, Alice encounters a hookah-smoking caterpillar sitting on top of a mushroom. The caterpillar delivers the book’s most pharmacologically suggestive line: “One side will make you grow taller, and the other side will make you grow shorter.”

Alice tears off pieces of the mushroom and experiments. One side elongates her neck grotesquely. The other shrinks her. Size is unstable. Identity is unstable. The rules of the physical world have become negotiable.

The temptation to read this as a psychedelic allegory is overwhelming, and generations of readers have succumbed to it. The mushroom. The altered perception. The dissolution of normal spatial relationships. The caterpillar’s drowsy, Socratic questioning — “Who are you?” — directed at a girl who has just fallen through a hole in reality and can no longer answer with confidence. It sounds like a trip report.

It probably isn’t one. Carroll was a Victorian academic who drank moderately and showed no documented interest in psychoactive substances. The Amanita muscaria — the red-and-white spotted mushroom that the caterpillar is almost certainly sitting on, given Victorian illustration conventions and the fly agaric’s cultural prominence in English folklore — was known in Carroll’s era primarily through Siberian ethnographic accounts and English fairy tales, not through direct psychedelic experimentation. Carroll’s mushroom likely derives from folklore, not pharmacology.

But here is where the story becomes more interesting than the question of authorial intent.

It doesn’t matter whether Carroll intended a drug metaphor. The image — a mushroom that alters your size, your perception, your sense of self — entered the collective unconscious with the force of a myth. It became the default Western visual metaphor for mushroom-induced altered states, decades before Gordon Wasson ate his first Psilocybe in Oaxaca. When the psychedelic counterculture of the 1960s went looking for imagery, Alice was waiting. The Jefferson Airplane song “White Rabbit” (1967) — “One pill makes you larger, and one pill makes you small” — mapped Carroll’s imagery onto the psychedelic experience so precisely that the two became permanently fused in the popular imagination.

Carroll created a container. The culture filled it. The mushroom on which the caterpillar sits has become, through a process no one planned and no one can undo, the most recognizable image of psychedelic transformation in Western art. An Oxford mathematician’s children’s book illustration became the logo for an experience he never had.

Some images are bigger than their authors. Some mushrooms are bigger than their books.

The Stoned Ape and the Food of the Gods

Terence McKenna was not a scientist. He was — and this is not a diminishment — a bard. A storyteller of unusual power operating at the intersection of ethnobotany, philosophy, psychedelic experience, and unrestrained speculation. He had a voice like warm honey poured over gravel, a vocabulary that moved between technical precision and cosmic grandeur without apparent effort, and an absolute, unapologetic willingness to follow an idea wherever it led, including places that made his academic contemporaries wince.

The idea that made them wince most spectacularly was the Stoned Ape Hypothesis.

Proposed in McKenna’s 1992 book Food of the Gods: The Search for the Original Tree of Knowledge, the hypothesis runs approximately as follows: approximately two million years ago, as climate change transformed the forests of equatorial Africa into grasslands, ancestral hominids (Homo erectus or an earlier species) began following cattle herds across the expanding savannas. Cattle dung is a primary substrate for Psilocybe cubensis and related species. The hominids, being omnivorous and experimentally inclined, would have encountered and consumed these mushrooms.

McKenna argued that psilocybin, at various dosage levels, would have conferred adaptive advantages. At low doses (a microdose, essentially), increased visual acuity — useful for a predator-prey detection on open grasslands. At moderate doses, increased sociality, empathy, and sexual arousal — useful for group cohesion and reproductive success. At high doses, visionary experiences that may have catalyzed language, symbolic thinking, and religious consciousness — the cognitive capacities that distinguish Homo sapiens from every other primate.

In other words: mushrooms made us human.

The scientific establishment’s response has been, charitably, skeptical. The hypothesis is largely unfalsifiable — we cannot test the cognitive effects of psilocybin on extinct hominid species. The neurological mechanisms by which psilocybin might have driven the rapid brain expansion observed in the fossil record (the human brain roughly tripled in size over two million years) are not specified. The assumption that psilocybin reliably enhances visual acuity at low doses is supported by anecdote but not by controlled research. And the leap from “psilocybin affects cognition” to “psilocybin drove the evolution of human consciousness” is, to put it mildly, a large one.

And yet.

The Stoned Ape Hypothesis will not die. It has been debunked, dismissed, ridiculed, and ignored by mainstream paleoanthropology, and it remains one of the most widely known ideas in psychedelic culture. McKenna’s books are still in print. His lectures — available on YouTube, where they accumulate millions of views — continue to recruit new adherents. The idea persists not because it is proven but because it is resonant. It provides a narrative — a creation myth, really — for the psychedelic experience. It says: this is not a departure from human nature. This is the source of human nature. The mushroom is not the alien. The mushroom is the ancestor.

Whether or not McKenna was right about the evolutionary mechanism, he was pointing at something real: the relationship between humans and psilocybin mushrooms is old, widespread, and deep enough to suggest that it is not incidental. Cultures separated by oceans and millennia independently discovered, revered, and ritualized the same class of fungi. That convergence deserves explanation. McKenna’s explanation may not be the right one. But the question he asked — why do humans and mushrooms keep finding each other? — is the right question.

Wasson, Santa Claus, and the Red-and-White Mushroom

Speaking of ideas that will not die.

In 1967, ethnomycologist R. Gordon Wasson — the former J.P. Morgan executive who had become the twentieth century’s foremost scholar of human-mushroom relationships — published Soma: Divine Mushroom of Immortality, in which he argued that the mysterious soma of the Rigveda (the sacred intoxicant of ancient Vedic religion, whose identity has been debated for centuries) was Amanita muscaria, the fly agaric mushroom.

The argument was detailed and controversial. But a side current of the Amanita scholarship — one that Wasson himself did not fully develop, and that has been elaborated by subsequent writers with varying degrees of rigor — produced one of the most peculiar theories in the history of religious scholarship: the Amanita muscaria theory of Santa Claus.

The theory, in compressed form: Siberian shamans of the Koryak, Kamchadal, and other northeastern peoples used Amanita muscaria as an entheogen. The fly agaric is red with white spots. Shamans wore red and white ceremonial garments. Reindeer, which range across Siberian tundra, are known to seek out and consume Amanita muscaria — and Siberian peoples observed this behavior, sometimes drinking the reindeer’s urine (which concentrates the psychoactive muscimol while filtering out the nauseating ibotenic acid) as an alternative preparation method. When deep snow blocked the doors of Siberian dwellings, shamans sometimes entered through the roof’s smoke hole — descending into the home from above, bearing gifts (dried Amanita muscaria, which were hung in stockings or bags to dry near the fireplace). The birch tree, under which Amanita muscaria commonly grows, was considered a cosmic axis — a world tree connecting earth and sky.

Red and white. Reindeer. Entering through the chimney. Gifts hung by the fire. A flying journey (the shamanic trance). A figure associated with a tree.

The parallels are striking. They are also circumstantial. No direct historical line connects Siberian shamanic practice to the modern figure of Santa Claus, whose documented genealogy runs through Saint Nicholas of Myra (fourth-century Christian bishop), Sinterklaas (Dutch tradition), and nineteenth-century American commercial culture. The Santa Claus-Amanita theory is unfalsifiable, geographically strained, and relies on the kind of pattern-matching that the human brain excels at and should not always trust.

It is also, to put it plainly, really fun. And it has lodged itself so firmly in psychedelic culture that mentioning it is almost obligatory. The red-and-white mushroom hiding in plain sight at the center of the Western world’s most popular secular holiday is too good a story not to tell, even — especially — with the caveat that it might be nothing more than a coincidence.

Some coincidences are load-bearing. Some are just coincidences. The honest answer is: we do not know which this is.

The Visual Language of Expanded Consciousness

The twentieth century’s psychedelic art explosion did not come from nowhere. It came from the same place the Tassili paintings came from, the same place the Aztec codices came from, the same place every culture’s visionary art has come from: the encounter between a human visual system and a psychoactive compound that temporarily removes the filters.

The 1960s produced the first generation of Western artists who attempted, systematically, to depict the psychedelic experience in visual art. Peter Max translated the LSD aesthetic into pop art — bright, saturated, flowing, joyful — and became the visual signature of the counterculture. Mati Klarwein, a German-Israeli painter of hallucinatory landscapes and impossible anatomies, created the cover art for Miles Davis’s Bitches Brew (1970) and Santana’s Abraxas (1970) — images of biological metamorphosis and cultural collision that became icons of the psychedelic era. The Grateful Dead’s visual identity — the dancing bears, the steal your face skull, the lightning bolt — became a portable visual language for an entire subculture, recognizable at a hundred meters.

But it was the generation that followed — artists who emerged from the psychedelic experience with formal training and a commitment to depicting it with precision rather than approximation — who created the visual language that defines psychedelic art today.

Alex Grey, arguably the most influential living psychedelic artist, developed a style he calls “sacred mirrors” — layered depictions of the human body that simultaneously reveal skeletal, muscular, circulatory, nervous, and energetic systems, as if the body were transparent and all its layers visible at once. His paintings — Net of Being, Theologue, Cosmic Christ — are attempts to render, in oil on canvas, the experience of perceiving the interconnectedness of all systems. Grey’s art is not psychedelic illustration. It is psychedelic phenomenology — a careful, disciplined attempt to show what the experience actually looks like from the inside.

Amanda Sage, a student of the Viennese Fantastic Realism tradition who studied with Ernst Fuchs, brings a technical precision to visionary art that connects the psychedelic tradition to the Old Masters. Her work is luminous, anatomically rigorous, and unapologetically mystical.

Android Jones, a digital artist who works with virtual reality and immersive projection, has pushed psychedelic art into new media — creating experiences where the viewer is not looking at a representation of expanded consciousness but is inside one. His large-scale projection installations and VR environments are, arguably, the closest thing to a psychedelic experience that can be had without a psychedelic.

The visual motifs recur across all of these artists, and across the tradition as a whole: fractals (self-similar patterns at every scale), phosphenes (geometric visual patterns generated by the visual cortex under stimulation), entoptic phenomena (the internal visual architecture of the nervous system itself), dissolution of boundaries (between self and other, figure and ground, inside and outside), and radiant light (the sense that consciousness itself is luminous).

These are not arbitrary aesthetic choices. They are reports. They are what humans see when the default visual processing pipeline is disrupted. The fact that artists separated by nine thousand years and every conceivable cultural difference — from the Tassili painters to Alex Grey — depict structurally similar visual phenomena is evidence that the phenomena are real: not culturally constructed, but neurologically generated. The mushroom shows everyone the same geometry. The artists are just the ones who can draw it.

The Library of the Mushroom Mind

If visual art shows what mushrooms look like from the inside, literature shows what they mean from the inside. And the shelf, considered as a whole, is one of the most unusual reading lists in Western letters.

Aldous Huxley, The Doors of Perception (1954): the book that introduced the literary mainstream to psychedelic experience. Huxley’s subject was mescaline, not mushrooms, but his framework — the “reducing valve” theory of consciousness, the idea that the brain normally filters out far more than it lets through, and that psychedelics temporarily widen the aperture — became the foundational metaphor for an entire field. Every writer who followed was, in some sense, annotating Huxley.

Carlos Castaneda, The Teachings of Don Juan (1968) and its sequels: the most controversial books in the psychedelic literary canon. Castaneda claimed to have apprenticed with a Yaqui shaman named Don Juan Matus, who guided him through psychedelic experiences with peyote, psilocybin mushrooms, and Datura. The books were published as anthropology. They were almost certainly fiction. Castaneda’s methodology, his field notes, and eventually his entire biography have been thoroughly debunked. But the books sold tens of millions of copies and shaped the imaginative landscape of psychedelic culture more than almost any other texts. The Castaneda problem is the problem of psychedelic literature in miniature: the experience is real, the report is unreliable, and the culture doesn’t always care about the difference.

Terence McKenna, Food of the Gods (1992): part ethnobotany, part cultural criticism, part creation myth. McKenna’s writing is sui generis — dense, associative, funny, grandiose, infuriating, and brilliant in unpredictable proportions. Whether you agree with the Stoned Ape Hypothesis or not, Food of the Gods is a book that takes the human-mushroom relationship seriously as a subject worthy of sustained intellectual attention, and it was almost alone in doing so at the time of its publication.

Michael Pollan, How to Change Your Mind (2018): the book that brought psychedelic research to the mainstream educated reader. Pollan — already one of America’s most trusted nonfiction writers — did what Huxley had done sixty-four years earlier: he gave the psychedelic experience a narrator that skeptical, well-educated people could trust. The book’s success (number one New York Times bestseller, adapted into a Netflix series) was a cultural inflection point. It announced, to an audience that read the New Yorker and listened to NPR, that psychedelic medicine was not a fringe enthusiasm but a legitimate field with serious science behind it.

The thread that runs through all of this literature — from Huxley to Pollan, with Castaneda and McKenna as the unreliable narrators in between — is the same thread that runs through the visual art: the attempt to translate an experience that resists translation. Psychedelic experience is, at its deepest levels, ineffable — it exceeds the capacity of language to describe it. Every writer on this shelf knows this. Every one of them tries anyway. The literature is a monument to the productive failure of language in the face of direct experience.

Nine Thousand Years of the Same Image

Stand back far enough from this survey — the Tassili caves, the Aztec mushroom stones, Alice’s caterpillar, McKenna’s stoned apes, Wasson’s soma, Grey’s sacred mirrors, Pollan’s careful journalism — and a single motif repeats, across cultures, across millennia, across every medium humans have ever used to record their experience:

A human figure, merged with a mushroom, transformed by the merging.

The Tassili shaman with mushrooms sprouting from his body. Xochipilli encrusted with sacred plants. Alice growing and shrinking as she eats the fungus. McKenna’s hominid on the African savanna, brain expanding with each dose. Grey’s translucent human, its nervous system visible, lit from within by something that is not quite light.

The same image. The same motif. Nine thousand years.

This does not prove McKenna’s Stoned Ape Theory. It does not prove Wasson’s soma hypothesis. It does not prove anything, in the strict scientific sense. What it demonstrates is something more modest and, in its way, more profound: the human-mushroom relationship is among the oldest themes in the entire history of human representation. Humans have been depicting this encounter — this merging, this transformation, this crossing-over — for as long as they have been depicting anything.

Before we wrote about agriculture, we drew mushroom shamans. Before we had a word for “religion,” we carved mushroom stones. Before we understood the chemistry, we understood the experience. And we kept coming back to it, culture after culture, century after century, in media ranging from cave walls to oil paintings to virtual reality, because the experience is real and it matters and it will not be ignored.

The mushroom has been in the art since the beginning. Not because we put it there. Because it belongs there. Because the encounter between human consciousness and fungal chemistry is one of the defining relationships of the species, and art — which is how we process what matters most — has always known this, even when science didn’t.

Nine thousand years.

We are still drawing the same picture.

This article is part of Kind Stranger’s Ancient Roots series, exploring the deep history of psychoactive plants and fungi in human civilization. For the oldest confirmed psychedelic ceremony in the Western world, see The Eleusinian Mysteries. For the history of the fungus that produced LSD, see Ergot, LSD, and the Discovery That Changed Everything. For our full guide to the mushroom species at the center of modern psychedelic research, see our Psilocybin Guide.