This was the first of Conan Doyle's Professor Challenger stories, and arguably still the best. Narrated by journalist Edward Malone, this is the tale of how he went about meeting Professor Challenger, and hopefully uncovering a hoax, but instead found himself on an expedition with Challenger, Professor Summerlee, and Lord John Roxton.
Since Professor Challenger has come back from South America no one will believe him about strange creatures, even though he shows his evidence. In the end a small expedition is mounted to determine whether Challenger is pulling a hoax, or indeed has found un undiscovered area, where dinosaurs still walk the Earth.
Full of adventure at the discovery of a 'lost world' our intrepid explorers have more to deal with than dinosaurs, there are also two different tribes in the area, and our group seem to be stranded for all time. Will they ever be able to return to the normal world, or even survive their trip?
I suspect like many people I read this when I was still at school, but it is one of those tales that is worth reading more than once, and is great to introduce younger readers to adventure.