of Nantucket (1838) has certain lost world elements towards the end of the tale. James Hilton's Lost Horizon (1933) enjoyed popular success in using the genre as a takeoff for popular philosophy and social comment. It introduced the name Shangri-La, a meme for the idealization of the lost world as a Paradise. Similar books where the inhabitants of the lost world are seen as superior to the outsiders, are Joseph O'Neill's Land under England (1935) and Douglas Valder Duff's Jack Harding’s Quest (1939). Hergé also explores the theme in his Tintin comics The Seven Crystal Balls and Prisoners of the Sun (1944–48). Here the protagonists encounter an unknown Inca kingdom in the Andes. Contemporary examples Contemporary American novelist Michael Crichton invokes this tradition in his novel Congo (1980), which involves a quest for King Solomon's mines, fabled to be in a lost African city called Zinj. During the 1990s, James Gurney published a series of juvenile novels about a lost island called Dinotopia, in which humans live alongside living dinosaurs. In video games, it is most notably present in the Tomb Raider and Uncharted franchises. The Hanna-Barbera action cartoon Space Ghost features a segment "Dino Boy in the Lost Valley", about a young boy named Todd who survives a plane crash and lands in a hidden prehistoric valley in South America. In another Hanna-Barbera cartoon Valley of the Dinosaurs science professor John Butler and his family - wife Kim, teenage daughter Katie, young son Greg, and dog Digger - are on a rafting trip along the Amazon River in an uncharted river canyon when they are suddenly swept through a cavern and caught in a whirlpool. Upon resurfacing, they find themselves in a mysterious realm where humans coexist with various prehistoric creatures, including dinosaurs. The Butlers meet and befriend a clan of Neanderthal cavepeople. In movies, the Indiana Jones franchise makes use of similar concepts. Also comics make use of the idea, such as the Savage Land in Marvel Comics and Themyscira in DC comics. Geographic settings Early lost world novels were typically set in parts of the world as yet unexplored by Europeans. Favorite locations were the interior of Africa (many of Haggard's novels, Burroughs' Tarzan novels) or inland South America (Doyle's The Lost World, Merritt's The Face in the Abyss), as well as Central Asia (Kipling's The Man Who Would Be King, Haggard's Ayesha, the Return of She,