Darius Mason at the outskirts of Bastion.
Bastion is an underground colonist city founded after the destruction of the Terraformer and serves as a stronghold for the Red Faction. The city is supported by a vast network of infrastructure such as the Deep Freeze 9 Water Purification Plant and an array of water pumps like Pumping Station #42 as well as transport networks including elevators and monorails.
Bastion also boasts a large marketplace, including store chains like Loco Parker Tacos, Volition Value, Oasis, and several Joe Cola Smith General Stores. It serves as a central hub for the underground mining colonies formed after much of the Martian population is forced to retreat from the surface of the planet.