The Quartz Monolith
A perfectly-cut cuboid of quartz reaching to the clouds, lodged in the mountains since the world was young. The monolith’s great shadow plunges anything under it into twilight.
The edges, still sharp enough to cut steel after millenia, define the smooth sides polished to a mirror sheen and are cool to the touch.
A crudely blasted corridor at the foot of the monolith, nicknamed by the academics the Stair to Glory, leads about thirty feet upwards into a pristinely-cut corridor.
Lightning storms are often attracted to the quartz at night.
Inside the monolith: