The Sinai Palimpsests Project (2011–2016) used multispectral imaging to recover 305 erased texts from scraped-and-reused parchment at St. Catherine's Monastery

A palimpsest is parchment that was scraped clean and overwritten to reuse a scarce material, leaving an earlier text erased but not fully gone. The Sinai Palimpsests Project (2011–2016), run by the Early Manuscripts Electronic Library, applied multispectral imaging — photographing pages under many wavelengths of light to separate the faint under-writing from the visible over-text — to the collection of St. Catherine's Monastery on Mount Sinai. Per the project: "EMEL spectrally imaged 74 of the Monastery's palimpsests (6,800 pages)... Based on these images, participating scholars identified 305 erased texts," several in languages or versions not previously attested, including Syriac and Christian Palestinian Aramaic material.

The project sits in the same technical lineage as virtual unwrapping and the reading of PHerc. 1667: each recovers "text that is there but cannot be seen," moving from imaging a flat surface to reconstructing writing inside a sealed volume. Its human context also links to the vault's manuscript-transmission thread — the Christian scriptorium tradition that copied and preserved Greek learning, feeding translators toward Baghdad's House of Wisdom, the same broad current that carried works like Kalila wa-Dimna and the book-as-elixir transmission stories.