The cover from an obscure cult classic of 90s sci-fi, wherein an androgyne from a society of dinosaur-like people discovers some worrisome truths about what powers their Sufficiently Advanced Technology.

This is actually book 3 of Malachite's "Octahedron Sequence", though not advertised as such on the cover. Malachite (generally thought to be a pseudonym, though nobody has any idea who for) vanished without a trace after the publication of the fourth book of what that volume's concluding Author's Note said had begun to look more like a hexology than the trilogy it was originally solicited as.

(Commission for Green.)