The following account was recorded in the agent's log during your transmission: Dense, pearly fog shrouds a massive, ancient cairn, the air thick with a heavy, expectant stillness that's infused with the scent of ozone and damp earth. Uh, above, a faint, silvery light seems to be seeping through the fog, casting an eerie, diffused glow across the surroundings. A low, pulsing hum – like the reverberation of a colossal, subterranean bell – vibrates through the ground, seeming to be drawing the fog into a slow, spiraling dance around the cairn. The cairn's stones appear to be covered in ancient, swirling glyphs that shift and change pattern like living, breathing serpents.