https://en.wikipedia.org/wiki/A_Strange_Manuscript_Found_in_a_Copper_Cylinder
https://gutenberg.org/ebooks/6709The satirical and fantastic romance is set in an imaginary semi-tropical land in Antarctica inhabited by prehistoric monsters and a cult of death-worshipers called the Kosekin.
This is PD for everyone.
There's a group project already on LV, but the suggester would love a solo version. The group version runs a bit over 9 hours.