What is the classic underground adventure novel of the science fiction writer Verne?

Verne's classic underground adventure novel was The Mysterious Island. This novel was published in 1902 and was one of Verne's most famous works, as well as one of his representative works. The novel tells the story of a young scientist, Dr. Harry Scott, and his explorer father searching for a mysterious island. They were sent to the depths of the earth's mantle to find a legendary mysterious island. It was said that this island could provide endless resources and wealth, but only brave people could reach it. In the process of exploration, they encountered many difficulties and dangers, including monsters deep underground, volcanic eruptions, earthquakes, and changes in the earth's crust. They also discovered a kind of sorcerer's stone that could allow people to enter another world. This sorcerer's stone could help them find the mysterious island, but it would also cause them to lose their souls. In the end, Harry and his father successfully found the mysterious island, but when they returned to Earth, they found that many changes had taken place on Earth, including a global economic crisis and a catastrophic volcanic eruption. Harry and his father's adventures on the mysterious island became an important event in human history, inspiring people to explore and think about the earth and the universe.