Well, to be fair, in 1951, there was still a great deal of conjecture about the Earth's inner structure; not only was the theory of "plate tectonics" completely unknown (it's no longer considered a theory), that the core was a viscous super-heated liquid with a solid center (outer core and inner core) was merely a conjecture (today it too is considered fact). This picture strikes me as a sort of "Journey to the Center of the Earth" (1959) meets "The Core" (2003), with perhaps a little more emphasis on the latter.
What was surprising was to see that the credit for music went to Ernest Gold (who appears to have scored a number of forgettable pictures earlier in his career). Gold would go on to score "The Young Philadelphians " (1959), "On the Beach" (1959), "Inherit the Wind" (1960), "Exodus" (1960) and "It's a Mad, Mad, Mad, Mad World" (1963); he won an Oscar for the score to "Exodus." Words were added in 1961 by Pat Boone(!) as "This Land Is Mine." Various versions charted in 1961, including by the piano duo Ferrante & Teicher and Montavani. It still can be heard today on radio stations that program older popular music.
What was surprising was to see that the credit for music went to Ernest Gold (who appears to have scored a number of forgettable pictures earlier in his career). Gold would go on to score "The Young Philadelphians " (1959), "On the Beach" (1959), "Inherit the Wind" (1960), "Exodus" (1960) and "It's a Mad, Mad, Mad, Mad World" (1963); he won an Oscar for the score to "Exodus." Words were added in 1961 by Pat Boone(!) as "This Land Is Mine." Various versions charted in 1961, including by the piano duo Ferrante & Teicher and Montavani. It still can be heard today on radio stations that program older popular music.