The Expeditioners and the Treasure of Drowned Man's Canyon — S.S. Taylor

Computers have failed, electricity is extinct, and the race to discover new lands is underway! In this nail-bitingly thrilling adventure novel, brilliant explorer Alexander West has just died under mysterious circumstances, but not before smuggling half of a strange map to his intrepid children -- Kit, the brain, M. K., the tinkerer, and Zander, the brave. Why are so many government agents trying to steal the half-map? What powerful secrets does it hold? And where is the other half? It's up to Alexander's children -- the Expeditioners -- to get to the bottom of these questions, and fast.