The following account was recorded in the agent's log during your transmission: Massive, crystalline formations tower above the seafloor, like... an underwater city in the darkness of the ocean abyss. Schools of bioluminescent fish illuminate the structures, their blue-green glow casting an otherworldly light on the crystalline walls. The water pressure's extreme, but somehow a small, delicate door hidden among the formations is slowly swinging open, releasing a faint hum and a cloud of glittering, iridescent particles that dissipate into the water. Umm, the smell's strongly metallic, and the air – or, I guess, the water – is charged with electricity.