It's no wonder British writer Sir Arthur Conan Doyle named this place "The Lost World." The World Heritage-listed park sprawls across more than seven million acres in southeastern Venezuela, encompassing a geologic petri dish of 100 flat-topped table mountains dating to the age of dinosaurs. Endangered jaguars, ocelots and armadillos, 100 bird types and more than 9,000 plant species are found here. But the centerpiece is Angel Falls, the highest unbroken waterfall on earth.