Osiris

Osiris is the earth-like world that the Hephaestus and Hermes ships were dispatched to. The Pioneer One base and a couple outposts created by the Hermes crew can be located on the surface, and occasionally underground.

Although Osiris seems quite homely, it houses many ancient alien structures and has quite the plethora of lethal fauna and flora. If the player wishes to descend deeper and uncover the secrets of the planet, they do so at their own peril if they do not have the right equipment...