It's an occult language found in the Voynich manuscript. I remember reading an essay by Terence McKenna on it when I went through a Huxley/Leary/McKenna phase in the 90s. He made it sound more interesting than it was (like he did with everything). Its illustrations are kind of blah, but the script is really nice.
I would be honored to contribute the cover art for your novel. No payment is fine.