 Indy mentions taking part in an archaeological dig in Jerusalem  about ten years earlier. This refers to an unmade episode of the  third series of _"Young Indiana Jones Chronicles, The" (1992)_ (qv)  that would have been called "Jerusalem, June 1909" and was supposed  to see Indys first meeting with his future mentor Abner Ravenwood  (who is mentioned in _Raiders of the Lost Ark (1981)_ (qv))