Beneath this raised floor, the lower level of Double Bind is in semi-darkness, shot through with patches of light falling through the shafts.
In the distance, two empty lifts rise and fall, out of time with each other, as they make their way towards the roof, then begin a slow descent, disappearing into the shafts and continuing down to the ground floor.
The modest 9ft deep shafts held a dozen skeletons of pyramid builders, perfectly preserved by dry sand along with jars of beer and bread for the afterlife.
In one of the shafts, a group seems to be playing a game, and another is carrying bundles of yellow cloth.
Piano wire was lowered down the shafts; readings taken and retaken, again and again.
Coffins were stacked one atop the other in 20-foot-deep shafts, the topmost mere inches from the surface.
Looking up into the shafts, we see another world, fragmentary views of light wells and corners, doorways and shuttered windows, air-conditioning units and alleys.
The mine shafts were backfilled with hardcore and capped with concrete.
In front of me, a vast empty floor sweeps into the distance, punctuated by shafts cut through it that disappear into darkness.
As Gambino, Glover can explore his every behavioural tic, trait and hangup, as well as let great shafts of light on to everyone else's.
Codelco mobilised contractors and equipment from around the world to drill three separate rescue shafts.
