As we stepped into the dark, an uncanny gust of wind followed us in and continued on down through the wide and spacious halls, echoing incessantly. Our eyes, still blinking from the polar glare, adapted at last and we could finally make out our surroundings.

There was scant light, yet enough for us to discover ancient and complex corridors, halls, and rooms built by unknown hands eons ago. What craft erected those delicate walls and exquisite pillars that rose above the precisely detailed flooring of stone slabs beneath our feet?

The whole space seemed to pulsate with a strange rhythm, faint and indistinct. As we embarked on our exploration of these subterranean ruins, the feeling of disquiet only continued to grow. The further we ventured in, the more it appeared that in some bizarre way the place itself became aware of our presence, and we seemed to be alone no longer.