Ok, I thought this movie was pretty cool when I saw it as a kid.  It was on a double bill with This Island Earth, which would’ve been a re-release in 1964.  It has horrible acting and a T-Rex that is a guy in a suit, plus a crazy caveman.  They built a full size jungle set with painted backdrop,  which is pretty cool, and they built a miniature jungle set for the T-Rex (and a miniature helicopter).  It’s a 1957 Universal film, so it has all the stylistic flourishes that the other films of that period have:  good production values, good music, earnest effects work.  And ponder ye the title:  The Land Unknown.  Why not just:  … The Unknown Land?

Shot in 5 days, this 1956 film directed by Roger Corman remains a favorite of mine.  I don’t know who wrote the synopsis on IMDb, but it beautifully captures the essence of the film’s plot in one sentence:   “A well meaning scientist guides an alien monster to Earth from Venus, so that he can rid mankind of feelings and emotions – but only death and sorrow result.”  The film is worth watching for Beverly Garland’s memorable performance as Lee Van Cleef’s neglected wife, who takes charge at the film’s conclusion.  And, there is a great monster created by Paul Blaisdell.