The lost world is a subgenre of the fantasy or science fiction genres that involves the discovery of a new world out of time, place, or both. It began as a subgenre of the late-Victorian adventure romance and remains popular into the 21st century.

This Golden Deer Classics compilation comprises the following stories:

- King Solomon's Mines by Henry Rider Haggard
- The Man Who Would be King by Rudyard Kipling
- The Lost World by Arthur Conan Doyle
- The Moon Pool by Abraham Merritt