Italian monster flick has the look of American sic-fi/horror...
“Caltiki The Immortal Monster” combines the efforts of two leading figures of Italian cult cinema, Riccardo Freda (“The Vampires,” “The Horrible Dr. Hitchcock”) and Mario Bava (“5 Dolls for an August Moon,” “Blood and Black Lace”). A team of archaeologists led by Dr. John Fielding (John Merivale) descends on the ruins of an ancient Mayan city to investigate the mysterious disappearance of its inhabitants. However, the explorers’ investigation uncovers an underwater treasure in gold, and a sacrificial pool, awakening the monster that dwells beneath its waters — the terrifying, malevolent god Catliki.<br /><br />The millions-years-old creature melts the flesh off of those unlucky enough to come in contact with it. The creature also has the ability to multiply itself, and a prophecy indicates that an imminent passing comet threatens to enlarge the creature. The concept of a man-eating ooze is also a theme of “The Blob” (1958) and “The Angry Red Planet” (1959), but “Caltiki…” was most likely influenced by “The Quatermass Experiment”,” released four years earlier and released in the United States as “The Creeping Unknown.”<br /><br />“Caltiki…” was made in 1959, a banner year for low-budget horror/science fiction flicks, and has the look of black & white American sci-fi movies of that period. It stands out because of its depiction of graphic, gruesome sequences of gore, rare for American movies of the 1950s. The monster itself is not especially scary looking, but the special effects, under the supervision of Bava, look good. There is extensive use of miniatures, which aren’t at all convincing, but a series of exciting action sequences in the film’s second half avoids the dreary, static scenes of unnecessary exposition so common in horror/sci-fi of the era.<br /><br />Bonus features on the 2-disc Blu-ray + DVD edition include new audio commentary by two authors who have written about Mario Bava; new discussion on the influence of classic monster movies to “Caltiki;” archival interview about Riccardo Freda, “The Genesis of Catliki,” an archival interview with filmmaker Luigi Cozzi; introduction to the film by Stefano Della Casa; original U.S. theatrical trailer; alternate opening titles for the U.S. version; vintage 54-page French “Caltiki” photo comic; and reversible sleeve containing original and newly commissioned artwork. The film has original mono Italian and English soundtracks, as well as English subtitles.
The movie title "Caltiki The Immortal Monster (2-Disc Special Edition) [Blu-ray + DVD]," available on Movies & TV, has received an average rating of 4.3 from 222 reviewers. 
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This title falls under the categories of Movies & TV, Featured Categories, Blu-ray and Horror. 
The additional details include the following in key-value format :
 {"Product Dimensions": "0.7 x 7.5 x 5.4 inches; 2.93 Ounces", "Item model number": "43504330", "Director": "Riccardo Freda, Robert Hamton", "Media Format": "NTSC, Anamorphic, Widescreen", "Run time": "1 hour and 16 minutes", "Release date": "April 25, 2017", "Actors": "John Merivale, Didi Sullivan, Giacomo Rossi Stuart", "Subtitles": "English", "Studio": "Arrow Video", "Country of Origin": "USA", "Number of discs": "2"}

Here is a brief synopsis of the title : Arrow Video presents a collaboration between two giants of Italian cult cinema – Riccardo Freda (The Vampires, The Horrible Dr Hichcock) and Mario Bava (5 Dolls for an August Moon, Blood and Black Lace)!.