"Fictional trips to the underground are a feature of all mythologies, but the best of the nineteenth-century tales is that of Verne." Isaac Asimov, 1966.
A Journey to the Centre of the Earth is an 1864 classic by Jules Verne. It tells of 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.