Lost in the Atlantic Valley; Or, Frank Reade, Jr., and His Wonder, the "Dart"

This work presents an absorbing science fiction adventure that follows the story of Frank Reade, Jr., a young inventor who builds a powerful submarine called the «Dart.» Frank and his crew set out on a journey across the Atlantic Ocean but encounter a strange underground valley filled with prehistoric creatures and dangerous traps. The novel is filled with action, suspense, and vivid descriptions of exotic locales.