Reddit user TrampStopDan2 recently shared a set of unusual documents his friend claimed to have found in a dumpster. The collection includes everything from sketches and notes about a supposed “otherworldly encounter” to technical roller bearing designs and even references to the Book of Ezekiel.

The find is as fascinating as it is puzzling, with some of the papers reportedly dating back to 1939. Below are just a few highlights, but you can explore the entire archive yourself (fair warning—it’s the kind of rabbit hole that can easily consume hours).

So what do you think—an elaborate hoax, or something stranger?