The document presents an annotated bibliography titled 'Les Terres Creuses' by Guy Costes and Joseph Altairac, which covers references to the concept of a hollow earth, spanning from ancient accounts to modern literature with 2,211 entries. It features a well-researched introduction and includes illustrations, though it is critiqued for its limited geographic focus and absence of notable ancient myths. Despite some weaknesses, it serves as a valuable resource for exploring 19th and 20th-century popular culture related to subterranean worlds.