A Journey to the Center of the Earth is a science fiction novel by Jules Verne. The story involves German professor Otto Lidenbrock who believes there are volcanic tubes going toward the centre of the Earth. He, his nephew Axel, and their guide Hans descend into the Icelandic volcano Snæfellsjökull, encountering many adventures, including prehistoric animals and natural hazards, before eventually coming to the surface again in southern Italy, at the Stromboli volcano. The genre of subterranean fiction already existed long before Verne. However, the present book considerably added to its popularity and influenced later such writings. For example, Edgar Rice Burroughs explicitly acknowledged Verne's influence on his own Pellucidar series. The book was inspired by Charles Lyell's Geological Evidences of the Antiquity of Man of 1863 (and probably also influenced by Lyell's earlier ground-breaking work Principles of Geology, published 1830–33).