Stored away in this rare-book library at Yale University is a late-medieval manuscript written in this cramped script and illustrated with these lively line drawings. Open the book and what you’ll see are lots of drawings of plants, bizarre naked (and possibly pregnant) women, human organs, and strange tentacled balls of roots that take the forms of animals. But perhaps the oddest thing about this book is that no one has ever read it, because this book is written in an unknown script, with an alphabet that appears nowhere else other than in its pages.

This month, on Hari Ini Dalam Sejarah Dunia, Umapagan Ampikaipakan and Tasha Fusil explore the enduring mystery that is The Voynich Manuscript.