Mariner Valley

Mariner Valley appears in Red Rising.

Mariner Valley begins as a distant, almost mythic Martian region in Golden Son, referenced only in passing as the birthplace of the Reaper's most loyal lieutenants. Across the later books it transforms from a peripheral mining colony into the beating heart of the Rising, a vast subterranean stronghold whose ice-locked caverns shelter fleets, refugees, and the political experiments of the new Republic. By the final volumes it stands as both sanctuary and battlefield, its frozen corridors echoing with the clash of old hierarchies and new ideals.