First Complete Virtual Unwrapping of a Herculaneum Scroll (PHerc. 1667) Reveals Stoic Treatise

First Complete Virtual Unwrapping of a Herculaneum Scroll (PHerc. 1667) Reveals Stoic Treatise

A whole Herculaneum scroll read without ever opening it

The carbonized papyrus PHerc. 1667 has been completely virtually unwrapped and its Greek text transcribed, proving that fragile ancient scrolls can be read digitally at scale.

The achievement marks the first time a rolled Herculaneum scroll has been read from beginning to end without physical unrolling, and it validates a reproducible, open‑source workflow that can be applied to the library’s remaining sealed rolls.

What was discovered in PHerc. 1667?

  • The scroll contains a Stoic philosophical treatise on ethics, likely written in the 2nd century BC.
  • The final preserved column names Aristocreon, the nephew and disciple of the Stoic master Chrysippus, anchoring the work in the Stoic tradition.
  • Sample passages, newly readable after two millennia, include:

    “…we will inquire into something, but we will not grasp it, if in some way we depart from ourselves and from our own nature…” “Having…strained ourselves to the utmost through research and learning…possessing the same practical wisdom…” “…such being the goods for us, even from the opposite evils there will be neither anything good — let alone beautiful — nor anything bad — let alone ugly — nor happiness…”

  • The full column‑by‑column transcription is available in the project’s preprint and data repository.

How the virtual unwrapping works

  1. High‑resolution phase‑contrast X‑ray micro‑tomography was performed at the ESRF BM18 beamline, capturing the internal geometry of the carbonized roll at micron scale.
  2. Geometric reconstruction traced the spiraled papyrus sheet inside the roll and mathematically flattened it into a planar surface.
  3. Machine‑learning ink detection highlighted the faint carbon‑based ink, which is almost indistinguishable from the surrounding charred papyrus.
  4. Scholarly verification – papyrologists examined the AI‑generated ink maps, transcribed the Greek, and cross‑checked the readings.

All raw tomographic data, reconstructed surfaces, transcriptions, and the code (the villa pipeline) are released under a Creative Commons licence and hosted on scrollprize.org/data and GitHub.

Independent confirmations on other scrolls

  • PHerc. Paris 4 (Scroll 1) – higher‑resolution synchrotron imaging made the ink directly visible in three dimensions. Segmenting the ink and projecting it onto the unwrapped page reproduced the 2023 Grand Prize reading one‑to‑one, confirming the reliability of the method.
  • PHerc. 139 – the same pipeline revealed the scroll’s title and author, identifying it as Philodemus, On Gods, Book 8, demonstrating that even a scroll’s metadata can be recovered without opening it.

Open‑science model behind the breakthrough

“The virtual unwrapping of the Herculaneum scrolls was pioneered at EduceLab by its principal investigator, Professor Brent Seales. In 2023 Seales opened his lab’s imaging and software technology to the Vesuvius Challenge – a public, donation‑funded effort he co‑founded with Nat Friedman and Daniel Gross – and from there a global community took up the problem.”

The Vesuvius Challenge attracted participants worldwide; many of the eventual research team first entered as contestants, won prizes for early breakthroughs, and were later recruited to the core project. This community‑driven model underscores how open data and open‑source tools can accelerate progress on heritage science.

Community reactions from Hacker News

  • "Do we have better imaginations?" – a commenter reflected on how Aristocreon could never have imagined that future machines would resurrect his scroll for a global audience.
  • "Only about 20 % of the Herculaneum site has been excavated" – another user highlighted the massive potential: hundreds of scrolls remain sealed, many likely containing entire libraries.
  • "This is one of the few things you can point at and say ‘AI made the world a better place’" – a reader praised the project as a standout application of machine learning.
  • "Very impressive! I also highly recommend visiting Herculaneum" – a comment expressed enthusiasm for both the technology and the archaeological site itself.

What comes next?

  • Scale up – The pipeline is designed to handle hundreds of rolls; the next targets include the still‑sealed core of the Herculaneum collection.
  • Community involvement – Researchers and volunteers can download the data, run the code, and contribute transcriptions via the project’s get started portal.
  • Broader impact – The same techniques could be adapted for other carbonized or otherwise fragile artifacts, expanding the reach of non‑destructive heritage imaging.

The thoughts of ancient philosophers, poets, and scientists—sealed for two thousand years—are now returning to light, one scroll at a time.

Sources