McHenry was a 19th century American explorer who discovered the route to the Temple of the Chachapoyan Warriors inscribed within the ruins of the Chachapoyan city Tec'na'pal in the highlands of Peru. Along with recovering most of the artifacts, he also detailed the path to the temple with a map.
McHenry spent most of his life in the jungles of South America, and penned his memoirs. An account ended up in the library of the University of Chicago which allowed the archaeologist Forrestal to take an incomplete copy of the map McHenry had included as an insert. Forrestal's competitor, Indiana Jones, and Marcus Brody later found that the other half of the map lay within McHenry's partially cataloged notes in the basement of the New York City branch of the National Museum.