Throw It In!: The majority of natives on-screen were locals who were "recruited on the spot".
Wag the Director: Stewart Granger had the first director Compton Bennett sacked as they couldn't get along and the shooting was going nowhere. The next director Andrew Marton, being a man's man, hit it off instantly with Mr. Granger.
Errol Flynn was originally cast as Alan Quartermain, but turned it down, as he did not desire to sleep in a tent on location in Africa. Instead he did Kim (1950), which was filmed in India, but the accommodations for the actors were at a local resort.
Audiences at the initial screenings laughed their heads off at the scene in which Elizabeth Curtis (a Victorian Proper Lady) cuts her Rapunzel Hair off and it then cuts to her with a perfectly coiffed 1950s hairdo. Producers considered removing the scenes because of it, but couldn't find another way to explain Elizabeth's change of hairstyle.
Deborah Kerr was lobbying hard to star in The African Queen at the time this was put into production. As Warner Bros had the rights to that, she was given the role of Elizabeth in King Solomon's Mines instead.
King Solomon's Mines (1985 film, plus the 1987 sequel Allan Quatermain and the Lost City of Gold)
Franchise Killer: The Cannon Group had originally planned a trilogy of films, the third film was to be an adaptation of She and Allan but this was ultimately abandoned after the extreme negative reception of Allan Quatermain and the Lost City of Gold, coupled with the financial difficulties of the company at the time.
Troubled Production: The shoot lasted six months and was torturous. Sharon Stone proved so difficult to work with that - as her marriage was falling apart at the time - that the rest of the crew played mean pranks on her. The film's budget was very low and filmmakers were even worried that the shoot was cursed.
John Hurt turned down the role of Alan Quartermain.
In 2011, a new sequel was proposed by Menahem Golan called Allan Quatermain and the Jewel of the East. The script was written by Menahem Golan and Richard Albiston, to be directed by Golan himself. The plot concerned Quatermain attempting to rescue his daughter from Chinese treasure hunters in the Congo. According to the 2015 documentary Golan: A Farewell to Mr. Cinema, Richard Chamberlain had agreed to return as the title character, but Golan died before the film began shooting.