AI Reads a Herculaneum Scroll Sealed for Nearly 2,000 Years

For almost two millennia, hundreds of papyrus scrolls recovered from Herculaneum were physically present but intellectually inaccessible. The eruption of Mount Vesuvius in AD 79 carbonized them into fragile, charcoal-like cylinders that can break apart when mechanically opened. Researchers have now completed the first end-to-end reading of an entire sealed scroll without unrolling it by hand.

A library preserved by the disaster that destroyed it

The scrolls were found in the Villa of the Papyri, the only substantial library to survive from the ancient Greco-Roman world. Volcanic heat destroyed their ordinary appearance but also preserved the carbonized material. Earlier attempts to open similar papyri often caused irreversible damage.

The newly read scroll, PHerc. 1667, was scanned and reconstructed digitally. The project transformed a tightly rolled object into a virtual surface on which columns of writing could be identified and interpreted.

How virtual unwrapping works

The process begins with high-resolution X-ray tomography, producing a three-dimensional map of the scroll’s internal layers. Software then traces the crumpled papyrus surfaces, separates overlapping sheets and mathematically flattens them. Machine-learning models detect subtle evidence of ink that is difficult for the human eye to distinguish from the carbonized fibres.

• Imaging: X-rays reveal the internal geometry without cutting the scroll.
• Segmentation: algorithms identify and follow individual papyrus layers.
• Ink detection: machine learning highlights surface patterns associated with writing.
• Scholarship: papyrologists reconstruct letters, words and damaged passages.

Why reading one complete scroll matters

Previous milestones recovered isolated words, passages or columns. Reading a scroll from beginning to end demonstrates that the full workflow can operate at the scale needed for complete works. It also changes the bottleneck: the central challenge is moving from proving that ink can be detected to processing large volumes of scans reliably.

The Herculaneum collection may contain lost works of philosophy, literature and history. Some surviving texts are associated with the Epicurean philosopher Philodemus, but unopened scrolls could preserve unknown authors or works known only by title.

AI is only one part of the achievement

The breakthrough required imaging physics, computational geometry, software engineering, machine learning, classical languages and painstaking human interpretation. AI makes faint patterns visible; scholars determine whether those patterns form meaningful Greek text.

What comes next?

The Vesuvius Challenge has published data and code to encourage independent work and is offering new prizes for reading additional scrolls. Hundreds remain unopened. Better scanning, automated layer tracing and more accurate ink models could eventually turn a collection once considered unreadable into a new corpus of ancient literature.