I am currently reading my way through a long list of science fiction and fantasy titles. (http://www.npr.org/2011/08/07/138938145/science-fiction-and-fantasy-finalists if you are interested in the list).
Allan Quartermain is a sequel to the famous novel King Solomon's Mines. Quatermain has lost his only son and longs to get back into the wilderness. Having persuaded Sir Henry Curtis, Captain John Good, and the Zulu chief Umbopa to accompany him, they set out from the coast of east Africa, this time in search of a white race reputed to live north of Mount Kenya. They survive fierce encounters with Masai warriors, undergo a terrifying subterranean journey, and discover a lost civilization before being caught up in a passionate love-triangle that engulfs the country in a ferocious civil war.
I have read Haggard’s She and King Solomon's Mines, and I basically knew what to expect when I began Allan Quatermain. In many ways, AQ is a combination of the other two novels, but not quite as good as either one of them. It’s an adventure fantasy, starring rich Englishmen in deepest darkest Africa. They shoot a lot of animals and incidentally kill off quite a few African servants in the course of their quest. And what are they searching for, you ask? Why an unknown civilization of white people in an area where almost no one has gone before.
When the men find their Lost Civilization, Haggard doubles down on a good thing. Instead of one mysterious white woman ruling the area (as in She), he provides two of them in this novel! And just to show that the love triangle trope is not unique to modern romance literature, both of these queenly personages fall head over heels in love with Allan’s companion, Sir Henry. To say that this causes problems is an understatement. Also similar to She is Allan’s position vis-à-vis Sir Henry, just as Horace Holly played wise, humbler advisor to his young companion Leo.
I adore Haggard’s She, having discovered this portal to fantastical adventure during my high school years. I feel affection for all of his work because of that and it is impossible for me to rate it objectively, but if you are only going to read one of his adventure fantasies, choose She and get to know She-Who-Must-Be-Obeyed. Allan is just not quite as much fun.