this first and silent version of the lost world be the best one for dinosaur fan a it have more dinosaur in it than any other . i have two vhs copy of this and an hour long version and the restored copy and which last for about 100 minute . professor challenger lead a party into an uncharted part of the amazon where prehistoric monster still live . when there and they explore the land and see the many dinosaur that roam it . they then decide to try and capture one of these alive and bring it back to london . they manage this and bring back a brontosaurus and but it escape and go on the rampage through london and bring down tower bridge and then escape down the thames . the stop motion dinosaur be do excellently by willis obrien and also include allosaurus and tricertops and pteranodon . the cast include wallace beery a chellenger and bessie love and lewis stone . this movie be a must see and especially if you be a fan of dinosaur movie like myself . excellent . rating represent 4 star out of 5 .