Dive into adventure in the last unknown territory on Earth - the sea. Join Robby Hoenig and a cast of characters as unusual as any ever met on a distant planet . . . In the second Robby Hoenig adventure, Secret Under Antarctica, a scientific expedition becomes a race to stop a terrorist plot for world-wide disaster, buried beneath the ice of the South Pole . . . Gordon R. Dickson's Robby Hoenig adventures are timeless young adult stories in the tradition of Arthur C. Clarke's Dolphin Island.