"Cinq Semaines En Ballon" by Jules Verne is a novel published in 1863. Dr. Samuel Fergusson and two companions embark on a daring balloon voyage across unexplored regions of Africa, from Zanzibar to Senegal. Using an innovative altitude-control mechanism, they aim to connect territories mapped by different explorers while traversing lakes, deserts, and legendary cities. The three adventurers face multiple dangerous encounters as they journey over a continent still shrouded in mystery for European explorers of the era. (This is an automatically generated summary.)
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.