Shows the elevation of the martian landscape.
red = hill, blue = valley
the big blue crater at 60°E, 45°S is probably an old impact crater from an asteroid and is 4 km deep!
The highest mountain on Mars is olympus mons at 20°N, 130°W with an altitude of 21 km above planet-wide average.
Source: NASA, Mars Orbiter Laser Altimeter
Also we have a whole Mars community here: !mars@discuss.tchncs.de
In case you want to know more about the planet, please feel free to ask :)
sorry for the late reply. yes it is indeed a difference between volumetric and gravitational center. there’s speculation that such a shift could have been caused by a big-enough asteroid impact, for example the one which left a big crater at 60°E, 45°S. It could have shifted the somewhat heavier core of the planet sideways, thus shifting the gravitational center away from the volumetric center.