Terrible special effects, but fun nonetheless...
“At the Earth’s Core,&#34; based on a novel by Edgar Rice Burroughs, stars Doug McClure as businessman and engineer David Innes whose old professor, Dr. Abner Perry (Peter Cushing), has recently talked him into financing his latest invention. The new machine, referred to by David as the Iron Mole, is a giant manned drill, capable of boring through solid rock at a rate of 78 feet per minutes.<br /><br />On a trial run, the Iron Mole works much faster than anticipated and becomes uncontrollable, going way off course. Soon, Perry and Innes are deep enough to feel the heat of the magma below the Earth’s crust. Both men are soon overcome by the intense heat, but are revived when the temperature once again changes dramatically. The Iron Mole is practically at the center of the Earth where it is frigid.<br /><br />Once the men reach the Earth’s core, they encounter countless obstacles, most notably a lost prehistoric world, peopled by intelligent, telepathic creatures called Meihars. Their soldiers are called Sagoths, and they are periodically sent to round up cave-dwelling humans to serve as slave labor in their massive city.<br /><br />The major drawback of “At the Earth’s Core” is its dreadful, though ambitious special effects. Monsters are rubber-suited, there are oozing lava flows, sets are not at all convincing, and the acting is weak. The Victorian setting is reminiscent of “The Time Machine.” But on a certain level — camp — the film is entertaining because of its sheer silliness. Caroline Munro is on hand for eye candy value as cave princess Dia, whose primary role is running around screaming from one life-threatening danger after another.<br /><br />Special features on the widescreen DVD release includes camera interviews with star Caroline Munro and director Kevin Connor, audio commentary with director Connor, and the original theatrical trailer. The film is also available in a Blu-ray edition.
The movie title "At the Earth's Core," available on Movies & TV, has received an average rating of 4.3 from 608 reviewers. 
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This title falls under the categories of Movies & TV, Featured Categories, DVD and Action & Adventure. 
The additional details include the following in key-value format :
 {"Genre": "Science Fiction & Fantasy, Action-Fantasy", "Format": "Dolby, NTSC, Anamorphic, Widescreen", "Contributor": "Kevin Connor, Godfrey James, Peter Cushing, Caroline Munro, Cy Grant, Doug McClure", "Language": "English", "Runtime": "1 hour and 29 minutes", "MPAA rating": "PG (Parental Guidance Suggested)", "Product Dimensions": "0.7 x 7.5 x 5.4 inches; 2.33 Ounces", "Director": "Kevin Connor", "Media Format": "Anamorphic, Dolby, NTSC, Widescreen", "Run time": "1 hour and 29 minutes", "Release date": "February 6, 2018", "Actors": "Doug McClure, Peter Cushing, Caroline Munro, Godfrey James, Cy Grant", "Studio": "Kino Lorber", "Number of discs": "1"}

Here is a brief synopsis of the title : They're in it Deep now! Murderous monsters, scantily clad prehistoric playmates and telepathic pterodactyls inhabit the center of our world in this colorful fantasy-adventure about a manned 'drill-craft' boring its way to the center of the Earth! Starring sci-fi superstars Doug McClure (The Land That Time Forgot), Peter Cushing (Madhouse) and Caroline Munro (Maniac), this subterranean chiller is the most endearingly whimsical entertainment on - or under - the planet's surface! There's more than lava at the Earth's core. There's also Pellucidar: an underground empire where gargantuan pterodactyls torture and enslave all humanoids - including the lovely Dia (Munro). But all that could change when a surface-dwelling scientist (Cushing) and an American businessman (McClure) drive their powerful Iron Mole straight into Pellucidar... stirring up a great deal more than dirt, rocks and lava! Wonderfully directed by sci-fi specialist, Kevin Connor (The People That Time Forgot).Special Features:-Interview with star Caroline Munro -Interview with director Kevin Connor -Audio Commentary by director Kevin Connor -Original Theatrical Trailer.