ADVENTURES AT THE CENTER OF THE EARTH (1965)

This Mexican movie was in Spanish, so I'm not sure exactly what was going on.  Some people, including Kitty de Hoyos (who was the lead in the horror movie La Loba the same year), get down in some caverns.  A guy got killed down there by something with a big claw.  Scientists show a projected film that includes the usual footage from One Million BC (1940) that you see recycled in these movies.  There is also footage of some (puppet?) dinosaurs.  They are all kind of goopy, but the Brontosaurus has the goopiest neck.  If dinosaurs were really like that, they wouldn't be able to keep their heads up at all.  The people who go down in the caverns get assaulted some more by the claw, which belongs to a cyclops-thing.  There's a lot of blood when necks get gashed, but the movie is in black and white, so it's not as disgusting as you would think.  A guy takes a break to sing a song.  There's also a big bat monster that can swim underwater, and there's an underwater scene that looks exactly like the one with Julie Adams in Creature From the Black Lagoon (1954).  There's also a part where it's eyes are the only things on the screen, which is kind of weird if you pause it.  Pretty fun, even though I still have no clue what anyone was saying.