Does anyone know a series of movies, which have been going on for a long time, about a group of people flying to a virgin forest by hot air balloon, where dinosaurs still exist?

The third season of American TV series "The Lost World".

At the beginning of the century, a group of explorers embarked on a journey to prove an almost impossible thing, that is, there was a prehistoric world at that time. A dreamer, a rich woman, a hunter, a scientist and a reporter are all pursuing an old story. They were trapped in a deserted place and met a wild beauty. They searched together in this lost civilized world and a horrible biological community. They must find a way to modern civilization and escape from the lost world ... Encyclopedia//view/327619.htm.