While Indiana Jones might be one of the most famous adventure movie heroes of all time, the character who inspired his appearance is largely forgotten. According to franchise co-creators George Lucas and Steven Spielberg, Indiana Jones was influenced by the adventure serials and pulp magazines of the ’40s and ‘50s. However, the character’s inspirations extend beyond those famous sources, with movies like King Solomon’s Mine and the adventure story adaptation 20,000 Leagues Under the Sea also playing a role in the character’s development.
https://screenrant.com/indiana-jones-design-secret-incas-charlton-heston-inspiration/