The following account was recorded in the agent's log during your transmission: Uh, a vast, perfectly spherical void is somehow excavated from the center of a massive, naturally occurring salt dome under a sweltering afternoon sky with the sun at its zenith. Like, wisps of brine-scented fog are creeping into the edges of the void as the air inside feels... incredibly dense, making the air pressure outside feel almost vacuum-like by comparison. Thousands of glimmering, obsidian mirrors are set into the crystalline walls, somehow reflecting constellations that aren't visible from this planet - the pattern of the Boötes void, and it's shifting in sync with the subtle, almost imperceptible, seismic vibrations of the dome.