Tera portal

The anomalies of the arks reach far and wide, spanning like roots and ravines across the planet. The arks’ anomalous activities can also reach great altitudes, making even flight to other locations on earth extremely dangerous. Only low orbit flight, in most cases, is the method in which safe travel through air is possible. For most of the population on earth, however, Tera portals are the primary way of traveling across the earth. These ark anomalies present themselves as seemingly out of place salt flats, but traversal through them leads to random locations. Traversal through these flats is unpredictable, however, and can easily lead to hazardous unknown locations. Those that want to reach particular destinations safely have to count on knowable ark guides or even arkkin themselves.
Tera portals provide access to the settlements on mars