Harrison Ford reprised his role as the heroic archaeologist in 2008's Indiana Jones and the Kingdom of the Crystal Skull, which hit cinemas nearly 20 years after 1989's Indiana Jones and the Last Crusade.
Ford has since confirmed Steven Spielberg and George Lucas are working on a follow-up, but recently revealed he will only sign up if he likes the story.
Movie sources now claim preparations for the fifth film are nearing completion and shooting has been scheduled to begin next year (11), with a script which will see Ford's character heading to the Bermuda Triangle - the famous stretch of the north Atlantic ocean where numerous aircraft have disappeared in unexplained circumstances.
An insider tells Stuff.co.nz, "George (Lucas) and Steven (Spielberg) have been working on a script and it's almost there. Harrison is on stand-by for filming next year. This looks like being an emotional and exciting conclusion to the franchise, with Indy facing his biggest challenge yet. Shia LaBeouf has a central role again as Indy's son but this will be a blockbuster made in the old fashioned way rather than the CGI efforts of the last movie."