Last Cannibal World, a.k.a. Jungle Holocaust), Sergio Martino's 1978 film The Mountain of the Cannibal God and a few films by Joe D'Amato starring Laura Gemser. However, Deodato also claims to be the forefather of the subgenre, with his film Ultimo mondo cannibale. Lenzi said in an interview for Calum Waddell's documentary Eaten Alive! The Rise and Fall of the Italian Cannibal Film: In response, Deodato, being interviewed for the same film, stated: A large number of cannibal films were made in 1980, making it the most successful year for the genre. In February 1980, Ruggero Deodato released Cannibal Holocaust, probably the best-known of all the cannibal films. Luigi Cozzi has said: "to me, the real beginning of the cannibal genre is Cannibal Holocaust. It was a legitimate success at the box office, but not in Italy as it was banned, blocked and withheld. They distributed it at a later date, but it was dead by then. However, it did astonishing business abroad." Its graphic and unrelenting violence and exploitation brought it significant attention. Despite this (or perhaps because of this), Cannibal Holocaust was an enormous success; it is sometimes claimed to have accumulated a $200,000,000 USD worldwide box-office gross, though this has not been verified and the true gross may never be known. Umberto Lenzi would also contribute to the genre in 1980 with Eaten Alive!, and again in 1981 with the notorious Cannibal Ferox, but by then, however, the genre was beginning to fade, and only a few other obscurities were made until Mondo film director Antonio Climati was considered to have put an end to the genre in 1988 with the film Natura contro, which was also released as an unofficial sequel to Cannibal Holocaust (it has an alternative title of Cannibal ). Other similar films were made with a direct-to-video release afterward, most notably the films by horror director Bruno Mattei. The genre is heavily indebted to mondo cinema, which similarly aimed to shock audiences with exotic customs and graphic violence. A common premise of the cannibal films is that mondo filmmakers (as in Cannibal Holocaust) or anthropologists (as in Cannibal Ferox) from a "civilized" country enter a jungle and run afoul of cannibalistic natives. Ironically, many have an anti-imperialist slant to them, as in the films, the "civilized" Westerners are the first to perpetrate extreme cruelty and violence upon the natives. The cannibals, in turn,