this be an awesome movie . it be the best and original classic film version of the lost world . base on sr. arthur conan doyle novel by the same name . which be about dinosaur and prehistoric creature still alive in the upper reach of the amazon in south america . the film version be pretty much the same but to bring the dinosaur to life be a whole other story . that job go to special effect pioneer willis h. obrien who would later gain world wide recognition with his ground break stop motion animation in the classic king kong ( 1933 ) . know to the modern world a the godfather of stop motion animation . obrien be a true pioneer . he bring dinosaur to life in an early silent movie short call the ghost of slumber mountain ( 1917 ) . his earlier silent movie short when he first conceive the idea be corky and primitive but still entertaining today . his early starting project for edison use clay animation . movie film short the dinosaur and the miss link represent a prehistoric tragety ( 1915 ) and r. f. d. 10 and 000 b. c. ( 1916 ) and and prehistoric poultry ( 1916 ) . later project the first and big project would not use clay . metal skeleton connect by wooden or metal ball and socket joint . very movable and flexible . make to hold a one frame pose for an exposure to be slightly change to the next and next . the lost world ( 1925 ) i think be obrien best work most of it except for few jerky dino animation sequence . i do not even think that be obrien stop motion . fred jackman help out with animation . which he do the jerky animation scene u see . marcel delgado who construct the dinosaur model do an excellent job . the movie be a masterpiece of early special effect i especially like when the brotosaurus escape the cage and break loose terrorize the street of london that be very memorable . the movie be in my top 10 favorite film of all time . check it out if you haven not already you stop motion fan and dinosaur movie fan . i just recently get the image entertainment dvd version which restore more then 50 % more of the film which originally be 100 some min . now they have 92 min . and have some extra feature . i also have the lumivision dvd of the 64 min . version that have trailer and those early edison clay animation short and 1 other clay thing about dinosaur that obrien do not do though like the edison one . last it have still gallery and note by ray harryhausen plus one last thing promotion piece about the lost world puzzle . i would advise both but buy the image entertainment dvd version though if you wan na really enjoy the film .