Finally, at a slightly sheltered rocky depression halfway up the mountain, he discovered a pitch-black, bottomless cave entrance.
Without hesitation, he walked inside.
The cave wasn't as pitch-dark as one might imagine; a gentle, steady, and perpetual glow of unknown origin filled the space, clearly illuminating the jagged and uneven rock walls inside.
Even more astonishing was that the scene inside the cave hadn't formed naturally!
Massive, impeccably cut logs stood like Giant arms, firmly supporting the cave ceiling, forming a solid, stable framework structure to effectively prevent collapse.
A roughly laid track of thick, wear-resistant wooden boards snugly clung to the cave wall and extended deep inside; a weathered-looking mining cart with a mottled wooden body quietly rested on the rails, its compartment haphazardly filled with variously shaped and sized ores, faintly glistening with Metal luster.
When did all this appear? How did it appear?
