So we either have proof of another intervention or the wrong explanation.
We also have the one and only super mounmtain on Mars which also begs explanation.
This makes two geological anomalies. I have also suggested that Mars' crust was removed by gravity work and sent out to form the asteroid belt. That is another anomaly. Add in Phobe and we have a space habitat as well. Quite the flight of the imagination, except that is the present nature of our evidence.