A prehistoric painted rock-art scene from the Tassili n'Ajjer plateau, with human and animal figures in ochre and white.
Prehistoric rock painting from the Tassili n'Ajjer plateau — the kind of art at the centre of the mushroom debate.Scan: Szilas, via Wikimedia Commons · Prehistoric (Green Sahara) · Source · Public domain

North Africa · Culture

Tassili n'Ajjer

Tassili n'Ajjer plateau, south-eastern Algeria

Disputed

On a Saharan plateau in Algeria, some of the world's oldest rock art includes figures read by a few researchers as mushroom-holding shamans. The forms are ambiguous, and nothing connects them to a known practice.

The painted plateau

Tassili n’Ajjer, a vast sandstone plateau in the south-eastern Algerian Sahara, holds one of the richest concentrations of prehistoric rock art on earth — thousands of painted and engraved figures across many millennia, from a time when the Sahara was green with rivers and herds. Among the oldest is the so-called Round Head period, whose tall, large-headed human figures have drawn interpretations ranging from the ceremonial to the fantastical.

The mushroom reading

In 1992 the Italian researcher Giorgio Samorini argued that certain Round Head figures hold mushroom-like forms, or have them sprouting from their limbs and heads, and read these as the oldest known depiction of hallucinogenic mushrooms — evidence, he proposed, of a Saharan visionary tradition seven to nine thousand years old.

The case against

The reading is disputed. The painted forms are ambiguous and can be read as stylised plants, weapons, or purely abstract shapes; the figures are cut off from us by thousands of years with no cultural thread to guide interpretation; and the argument turns on a handful of contested images. Prehistoric rock art is famously easy to over-read, and a painted shape that resembles a mushroom is not proof of a mushroom rite.

Where it stands

The strongest arguments on each side are set out in the debate: Do the Tassili paintings depict mushrooms?

Historical record

  1. c. 7000–5000 BCE

    The Round Head paintings

    During a wetter 'Green Sahara', artists of the Round Head period cover the plateau with large-headed human figures.

    Archaeology
  2. 1992

    The mushroom interpretation

    Giorgio Samorini reads certain figures as holding or sprouting mushrooms, calling them the oldest such depiction known.

    Iconography

Evidence

The support for this entry, separated by kind. Different kinds of evidence carry different weight.

Iconography
Round Head figures interpreted by some as holding mushroom-like forms, or with them growing from the body.
Later scholarly interpretation
Samorini (1992) reads the forms as mushrooms; other researchers see stylised plants, arrows, or abstract motifs.
◐ Open questions

What remains uncertain

  • The painted forms are ambiguous and admit several readings.
  • Thousands of years separate the images from any observer, with no ethnographic thread to interpret them.
  • The argument rests on a small number of contested figures; no species can be identified.

Sources & further reading

  1. Giorgio Samorini (1992). The oldest representations of hallucinogenic mushrooms in the world (Tassili n’Ajjer). Integration: Journal of Mind-Moving Plants and Culture.

    The best-known argument that Tassili n’Ajjer rock art depicts mushrooms; treated by later scholarship as disputed.

    Article / essaySecondaryArchive scan

  2. Andy Letcher (2006). Shroom: A Cultural History of the Magic Mushroom. Faber & Faber.

    A critical cultural history that deflates several popular entheogenic myths — useful precisely where it disagrees with the psychedelic canon.

    BookSecondaryLibrary / print

Editorial record

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Last reviewed

13 July 2026

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