Marineris Base is an industrial mining water research unit located in the center of Valles Marineris, a large tectonic "crack" in the Martian crust. It is the largest canyon of the Solar System with 4000Â km (2500Â mi) long, 200Â km (120Â mi) wide and up to 7Â km (23000Â ft) deep.
The canyon's depth suggests that this location may be the best site for a manned outpost as it would have the highest natural air pressure on Mars. Equatorial solar irradiation and access to water would enhance this option still further.
The base has a main area for the subsurface mining and a drill site a few miles to the south in the Melas Chasma region.
The main terminal area has a runway, 2 landing pads and an extra one for larger vessels (Arrow Freighter). Two more landing pads are located near the mineral and water container tanks (east). There are 3 large circular units for subsurface mining connected by 2 parallel train lines. Power to the electricity grid is supplied by 4 massive solar power plants.
The drill site is located a few miles to the south, where an ancient freshwater lake has been found in the subsurface. It has a landing pad and a shuttle service to take workers to and from the drilling rig and for shipping cargo water to the main base.
Hope you enjoy some busy shifts in the Martian great canyon.