“The Pool of the Black One” is one of the original short stories starring the sword and sorcery hero Conan the Cimmerian, written by American author Robert E. Howard. It’s set in the pseudo-historical Hyborian Age and concerns Conan becoming the captain of a pirate vessel while encountering a remote island with a mysterious pool that has the power of transmutation.
First published in Weird Tales in October 1933, the story was republished in the collections The Sword of Conan (Gnome Press, 1952) and Conan the Adventurer (Lancer Books, 1966).