Oceans of Dust — Peter J. Evans

SG-1 discover a creature of unimaginable evil lurking beneath the ancient sands of Egypt - a creature the insane Goa'uld Neheb-Kau wants as a terrible weapon. With Teal'c and Major Carter in the hands of the enemy, Colonel O'Neill and Daniel Jackson enlist Master Bra'tac. They track the creature across the galaxy in a desperate bid to destroy it before it turns their friends - and the galaxy - to dust.