Harry Hoyt directed, combining incredible special effects (the monsters) and unbearable melodrama (the actors).

As soon as the thrilling sequences are reached, where the explorers are seen in the supposed habitat of the living dinosauri, brontosauri, allosauri and other prehistoric monsters, there is no end of excitement.

The film retains a certain naive wonderment, the story (Eurocentric as it may be) still holds up, and Wallace Beery is an inimitably hirsute Professor Challenger.

In The Lost World, as it appears on the screen, the animals have been constructed with amazing skill and fidelity and their movements, though occasionally jerky, are generally convincing.