This model was made using the MOLA data processed with MATLAB R2016a. Like most of my topographical models its relief was exaggerated to make it more visible in the printed model.
The file's names explained: name_1_x_10_y.stl is 1 : x * 10y. So _1_6_10_7 is 1:600000000 or one in 60 million.
Mars is the only planet in the Solar System aside from the Earth that could ever hold liquid water. It once has oceans and a Earth like atmosphere, but without a magnetosphere, the solar winds erodded the atmosphere at the pont that it cannot sustain pressure nor temperature for liquid water. At now, Mars' atmosphere pressure is less than 1% of that of Earth at the surface. It is speculated that at these early conditions there could be primitive life forms. Most of the water was dissociated or condesated remaining as ice below the surface or in the poles ice cap. The planet surface has several noticeable features: the Olympus Mons, the biggest volcano on the Solar System; and the Valles Marineris. The entire northen hemisphere has a low elevation, that could be a gigant impact basin, probably caused by an impact of an object of the size of Pluto. Mars has two asteroid like moons, Phobos and Deimos. They are too small to make in the same scale (less than 0.3mm).
Orbital period: 686.971 d.
Composition: Rocky. Differenciated interior. CO2 based atmosphere.
Density: 3.9335 g/cm3.
Dimensions: 6792.4 km x 6779.0 km
Model scale: 1:6x107 (11cm) 1:1.2x108 (5cm)