What is the main conflict in The Lost World by Michael Crichton?

The Lost World is the second in a series of books by Michael Crichton about the existence of genetically engineered dinosaurs. In Jurassic Park, the prequel to The Lost World, Crichton introduces a company called InGen, which has discovered a way to clone dinosaurs from ancient DNA. In the first book, the arrogant head of InGen, John Hammond, believes he can control his amazing creations. Hammond is so sure of this that he builds a theme park and intends to promote it as a family vacation resort featuring his marvelous, cloned dinosaurs. However, nature proves too powerful for Hammond, and by the end of the first book, the dinosaurs have taken over the theme park and killed their human creators. As a result, InGen orders the destruction of the dinosaurs, and InGen's legal team places a gag order on the scientists who consulted with Hammond on his theme park.