Northland trilogy

Ten thousand years ago, a vast, fertile plain linked the British Isles to Europe. Home to a tribe of simple hunter-gatherers, Northland teems with nature's bounty, but is also subject to its whims. Fourteen-year-old Ana calls Northland home, but her world is changing. The air is warming, the ice is melting, and the seas are rising. One day Ana meets a traveler from a far-distant city called Jericho- a town that is protected by a wall. And she starts...

Many generations ago, the Wall was built to hold back the sea. A simple dam, it grew into a vast linear city, home to scholars, builders, and merchants. But now days are growing shorter, temperatures colder, and in the wake of long winters come famine, destruction, and terror. As a mass exodus to warmer climes threatens to fracture Northland, one man believes he can outwit the cold and even salvage some scraps of the great civilization--before interminable...