Ten Mile Treasure — Andre Norton

Few authors have achieved such renown as World Fantasy Life Achievement honoree and Science Fiction Writers of America Grand Master Andre Norton. With the love of readers and the praise of critics, Norton’s books have sold millions of copies worldwide.A secret plan, a mystery cave . . . and a summer full of excitement! When Christie Kimball and her family start a new life on a run-down Arizona ranch—once a bustling stagecoach stop in the Old West—their lives take an unexpected turn. Christie and her brother Neal have a secret plan to transform the ranch into a moneymaking tourist attraction for the motel their father wants to build. But when the Kimball kids and their Navajo friends go exploring in the desert and stumble on a mysterious treasure chest hidden deep in a cave—the real adventure begins . .. Soon a ghost town, a long-lost letter, and a concealed valley carry Christie and Neal into a lot more excitement than they ever dreamed possible!