Pretty neat, actually.
Mars looks like it underwent some massive even that made a huge gash across nealry half the surface.
So much so that the entire planed is actually lopsided.
And all the rocks randomly strewn around like they landed on some previously flat surface.
And the huge surface gash looks like something electrical happened. Including the swirls of magnetic force lines at each end. But it would have to be massive.
Reminds me of a place in CA that some buddies and I once spent a day in, seeing whose bike was the baddest of the badasses. Good times. :-)
One of the current Mars rovers has an experiment called MOXIE. It proved that we can make oxygen out of the Martian atmosphere. MOXIE is a small device. On the large scale we can make quite a lot of O2. So instead of having to transport all the needed oxygen, once the large MOXIEs are up and running, we will not have to carry all the necessary oxygen.
Way cool.