Reddit user TrampStopDan2 recently shared a curious set of images online, claiming his friend found them in a dumpster. The documents include everything from hand-drawn sketches and detailed accounts of a so-called “otherworldly encounter” to engineering diagrams of roller bearings and strange references to the Book of Ezekiel.

The collection is truly puzzling—some of the papers are dated as far back as 1939. Below are just a few standout images, but you can view the entire archive here (fair warning: you might find yourself scrolling for hours). What do you think—an elaborate hoax, or something more mysterious?