Stephen Bishop (cave explorer)
Stephen Bishop (c. 1821 – 1857) was an American cave explorer and self-taught geologist known for being one of the first people to explore and map Mammoth Cave in the U.S. state of Kentucky. Mammoth Cave has been recognized as the longest cave system in the world since 1972.
Source: Wikipedia — Stephen Bishop (cave explorer) (CC BY-SA 4.0)