Valles Marineris is a vast canyon that runs along the equatorial region of Mars. (ST reference: Star Charts) It is also the name of a city established in the 22nd century, built into the walls of the canyon and running its entire length, making it the largest city (by area) in the Sol system. (ST novel: A Singular Destiny)

The walls of the canyon were steep, unlike the artificially created, lightly sloped walls of the Devonshire Excavation. (TOS novel: Timetrap)

In 2155, Gannet Brooks and Qaletaqu passed near the Valles Marineris in a skimmer. (ENT novel: Beneath the Raptor's Wing)

Leonard McCoy flew over the Valles Marineris during a Starfleet survival training course. (TOS - Constellations short story: "Make-Believe")

Rupi Yee was born and raised in Valles Marineris, and Sonek Pran moved there with her when they were first married. (ST novel: A Singular Destiny)

the planet Mars
cities and settlements Ares CityBradbury CityBradbury TownshipBurroughs CityCochraneCydoniaEnduranceGundersdotter's DomeNew ChicagoNew ClintonNew VeniceNova AresPalyriaPhillipstownPopé PuebloRobinson TownshipSagan StationUtopia colonyWells City UFP emblem image.
regions and provinces Amazon PlanitiaMartian Colony 3Utopia Planitia (Nova AresUtopia colony)
geography Arisia MonsOlympus MonsTerra StrenumValles Marineris
bodies of water Apallinaris LakeCopernicus LakeHershel LakeLake CassiniLake HuygensLake LowellLake LyotLake MlarcovikLake PhillipsMapler LakeMie Lake
outposts and installations Fort KileyFort LincolnMarsbase/Mars BaseUtopia Planitia Fleet Yards (Utopia Planitia ControlUtopia Station One)

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