Strange Gods of the Dire Planet by Joel Jenkins
Approx. 91,480 words.
Published on July 13, 2011.
Displaced tens of thousands of years in time, astronaut Garvey Dire finds himself caught in Mars' savage past. In order to defend his adopted tribe against an ancient weapon of monstrous power he must battle hungry beasts, masked assassins, and uncover a traitor in his own family.