The following account was recorded in the agent's log during your transmission: Massive, crystal-encrusted stalactites hang from the ceiling of a vast underground cave, their facets reflecting a diffuse, pulsing light that seems to emanate from the walls themselves. Umm, the air's heavy with the scent of damp earth and... there's a low thrumming vibration, like a far-off engine, but it's not mechanical. I can see, like, the silvery outline of the Merkabah – a vehicle from Jewish mysticism – hovering just beyond the edge of perception, somehow casting a shadow on the cave floor despite not actually being there. The air feels still, like the moment before a storm breaks.