Location from Red Rising by Pierce Brown
The Red planet — breadbasket of the Society, cradle of the Rising. Beneath its terraformed surface, Reds mine helium-3 in darkness so that Golds can rule in light.
Mars is the beating heart of two civilizations that cannot coexist. On the surface, it is a Gold triumph — cities of marble and glass, gravLifts and racing chariots, House Augustus ruling from Agea with an iron grip and a velvet glove. Beneath the surface, it is something else entirely: a network of mining colonies where Reds are born, bred, and buried in tunnels they believe are the frontier of terraforming. The lie is the foundation. Reds think they are pioneers making Mars livable for future generations. In truth, the surface has been habitable for centuries. When Darrow learns the truth, Mars becomes the powder keg. The Rising begins here — first in the mines, then in the Institute, then across the planet. Every faction wants Mars: the Society because it is their jewel, the Rising because it is their symbol, the Rim because it is the center of power they have always resented. Whoever holds Mars holds the solar system.
A terraformed world of rust-red deserts, engineered atmosphere, and sprawling Gold cities built atop miles of subterranean mine shafts. The surface is dotted with estate-cities and military installations; beneath it stretches a labyrinth of tunnels where Reds live and die without ever seeing the sky they helped create.
Also known as: Mars, the Red planet, the cradle