Echoterminus (Hardcover) (ISBN-13: 9786269303205)

The third and final volume in the Echogenesis series. Sam and the rest of his small colony, vastly outnumbered by the warlike Howlers, must find a way to cope with the revelation of their discoveries, far to the west of the mesa. The means to end the war in humanity's favour lies in Sam's grasp - but it may also spell their doom.