Jules Verne 
Journey to the Center of the Earth [EPUB ebook] 

"Journey to the Center of the Earth" is a classic 1864 science fiction novel by Jules Verne. The story involves ger 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 an Icelandic volcano, encountering many adventures, including prehistoric animals and natural hazards, before eventually coming to the surface again in southern Italy, at the volcano ‘Stromboli’.