The boisterous, arrogant professor Challenger, a reputed biologist and anthropologist, dares the London Zoological Society to mount an expedition to verify his spectacular claim, without physical proof, that his previous expedition to the Amazonian basin found live dinosaurs. Apart from him and his 'socialite' counterpart, professor Summerlee, it consists of experienced discoverer Lord Roxbury, the young reporter Ed Malone -who got publicly struck down with Challenger's umbrella at his arrival- and Jennifer Holmes, Malone's news agency's boss's daughter, essentially as conditions for putting up the money. In Brazil they are joined by Jennifer's brother David and local 'guide' Manuel Gomez. They soon discover the dinosaurs are real and dangerous, like giant spiders, but loose their helicopter and thus are desperate for a way down from the isolated plateau. They learn Roxbury knew about the fate of Burton White, an explorer whose diary they find, thus presume to be dead, in search of diamonds, and confirmation of the local tribe being the lethal guardians of the plateau's secrets, but also get surprising help..
除了前期少量外景之外，一行人到了失落的世界之后就是全程摄影棚布景了，反正1960年的电影你懂的，原始的植物啊什么的都是道具模型。这个时候你就会看到一群成年人对着朵假花一本正经地说：“卧槽这是史前植物！”哈哈哈哈！这里最有意思的就是恐龙了。那个年代技术上还不过硬，做不出逼真的怪兽。1959年版《地心游记》是把蜥蜴抠图放大来当怪兽。这片子里就更搞笑了，剧组找来几只蜥蜴和一只鳄鱼给它们穿上“戏服”让它们演恐龙。于是一只有着三角龙头盾和剑龙板甲的蜥蜴跟一只有着棘龙背鳍的鳄鱼在屏幕上展开了一场撕逼大战，那一瞬间我还以为自己在看《动物世界》。特别是那两货真刀真枪的互相都咬出血了，最后双双坠崖身亡，为艺术献出了自己宝贵的生命。另外：最后那只蜥蜴宝宝好萌。