Bernice Summerfield: Dead and Buried(2010)

While Bernice waits to see what Braxiatel is planning, she's getting back to her roots - investigating the site of a previously undiscovered civilization. It isn't long however, before she's being pursued through the ruins by an implacable foe. On her own, light-years from rescue, she must rely on her wits to survive and discover who wants her dead and buried.

Official site