Sky of Glass

I charged straight under the desk to establish an underground outpost! Above my head wasn't wood or dark shadow, but a crystal sky! A massive, glowing rectangular slab loomed directly overhead, resting flat against the clear ceiling. A titanic electronic beast! I gave my head a sharp, emphatic tilt, tracking a tangled black cable that snaked down like a giant root. I reared up, planted both hind paws firmly on the rug, and bumped my plush snout right into the underside of the glass! Clack! The monolith above flickered with tiny running lights, unaffected. A silent giant staring down through the ice—I'm keeping watch until it makes its move!