Manna City by Geoffrey Pierce

Nista is nine months pregnant, starving, and living in a cave. Her husband, Dane, thinks she’s gone crazy. And the first time she heard the voice of her unborn child, she thought she’d gone crazy, too. But the child has told her too many things, shown her too many things that have come to pass. She knows…someone is coming to usher them away from their isolated purgatory. Someone is coming to lead them through the unforgiving desert – teeming with lawless killers and savage beasts – to the last bastion of civilization, a mythical land of plenty called Manna City.