The following account was recorded in the agent's log during your transmission: Umm, wisps of sulfurous fog cling to a maze of cyclopean stone pillars that support a vaulted ceiling of black basalt, like some ancient subterranean cathedral. Air is thick with the scent of damp earth and decaying leather, heavy with the weight of ages; the humidity is almost palpable, making every breath feel labored. Flickers of faint, blue-green luminescence seem to seep from between the pillars, illuminating ancient symbols of protection etched into the stone - umm, I think from that one medieval grimoire attributed to Honorius of Thebes. The stone itself seems to be absorbing sound, creating an unsettling, muffled silence.