As David Pringle has pointed out, Haggard's influence on modern literature and writers is two-fold. The first type of influence comes through the Lost Race/Lost World genre. Much of Haggard's work with Quatermain involves Quatermain adventuring in African Lost Worlds. What must be remembered about Haggard is that the Lost Race/Lost World genre did not exist as a genre before King Solomon's Mines. There were certainly many earlier works with unknown lands and races, but the genre as a whole did not develop until after the real world was fully explored and mapped. In this respect the Lost World/Lost Race genre only truly begins in the late 19th century, with King Solomon's Mines being the first of its kind. (Pringle, The Encyclopedia of Fantasy, page 594) King Solomon's Mines' popularity and the subsequent demands for sequels and similar books not only helped Haggard prosper as a writer but also gave rise to a flourishing industry of Lost World writers. These imitators were numerous in the late 1880s and 1890s, including such overt "homages" as John De Morgan's King Solomon's Treasures, Andrew Lang's He, and King Solomon's Wives by Henry Biron. However, the reading public's taste for Lost Race/Lost World stories did not significantly diminish in the decades to come. Writers as diverse as Edgar Rice Burroughs with his Tarzan novels and Arthur Conan Doyle with Professor Challenger and The Lost World (1912) produced Lost World stories. Even today Lost World/Lost Race stories are still being written, as with Michael Crichton's Congo, written in 1980 and filmed in 1995. Likewise, subgenres as various as, in Pringle's words, "tales of forbidden enclaves, Ruritanias, planetary romance, prehistoric neverworlds, fantasy-lands accessed by `portals,' etc" all derive in large part from the Lost World/Lost Race form which Haggard created. (Pringle, e-mail) The second and larger influence of Haggard and Quatermain lies in fantasy and adventure literature. Several of the most influential twentieth-century authors of fantasy fiction, including Edgar Rice Burroughs and Robert E. Howard, read Haggard and were greatly influenced by him. Haggard's influence on Burroughs, A. Merritt, and [continues]