If you look at a map of Mars, you see Mons Olympus, and three other giant volcanoes. Those three are in basically a straight line. They are also tilted with respect to the equator in such a way as to evoke the Belt of Orion.

Also of interest to me is how Mars, being smaller than Earth, has some of the most dramatic terrain in the solar system, even counting moons! Valles Marineris, Hellas Basin, the Polar regions, the stark north-south dichotomy. It's weird...

Coincidence? I think not, and I want to know what the buzz is on the topic of Mars.