Paul Shipton 
Lost City (Oxford Read and Imagine Level 4) [PDF ebook] 

In the rainforest, there is a Lost City of Gold. And in the Lost City, there is a beautiful gold statue. Ben, Rosie, and Grandpa visit the city with Silvia, an archaeologist. But other people know about the city too, and want that statue . . . Read and Imagine provides great stories to read and enjoy, with language support, activities, and projects. Follow Rosie, Ben, and Grandpa on their exciting adventures . . .