The train shot through the vacuum tubes at incredible speed, crossing the Martian sub-continents of Noachia and Xanthe in a of couple hours.
The planet Mars had once been a dead world; frozen, with a poison atmosphere. Planetary-engineers, also called terraformers, from Earth had changed all that, converting the planet to an Earth-like world, with two oceans, two ice caps, many seas and lakes, and one giant continent covering over half of the planet. The Martian continent was so big it was thought of as five different sub-continents: Noachia, Xanthe, Syrtia, Tyrrhena, and Sirenia. People lived on each of the five sub-continents, and in the Chryse Ocean. On the other hand, the Utopian Ocean, and the two polar ice caps: the Boreum in the north, and the Australe in the south, were all planetary parks, and no one was allowed to live in them...
