Bad. Really bad!! But it's not one thing wrong with it; it's many, many little things that turn this into garbage. The acting in this film was very good. But if the Captain had a disease like malaria then he should have been in a hospital and not on this trip. The goofy effects and dinosaur costumes were just lame. Now I know what the people who like this movie are saying to themselves. It's 1948, give them some slack, the technology was around. But take a look at King Kong of 1933 and tell me they could have done better if they tried.