The Lost City (Unabridged‪)‬

With the success of the lunar rocket in the previous novel, The Rocket's Shadow, Rick Brant and Scotty learn that they have been chosen as part of the Tibet expedition to place communications equipment there to bounce radar signals off the moon. From the beginning of the expedition, however, they discover that someone does not want the experiment to succeed. 

As the date for the lunar relay looms closer, they are still miles away from their destination and in the hands of a dangerous criminal. Their only friend is a clever Indian boy, Chahda, who has disappeared. Can they make it in time? Find out in this scond volume of the Rick Brant Electronic Adventure Series. It's an exciting adventure and travelogue of post-World War II India and Asia, as well as an interesting history and science lesson all balled up into one!