The following account was recorded in the agent's log during your transmission: Twin waterfalls cascade down a crystal-encrusted cave wall, their mist creating a veil of tiny rainbows in the pale blue light filtering through the cave's entrance... The air's cool and damp, with a faint scent of wet stone. An enormous, perfectly spherical chunk of obsidian hangs from the cave's ceiling, somehow perfectly still amidst the turbulent air, and a section of it seems to be slowly pulling inward like a deflating balloon, revealing an impossible, miniature replica of the Dogon's " Sirius B" star map etched into its surface in glittering silver dust.