They certainly look like they are having a blast in this behind the scenes picture from the making of Indiana Jones and the Kingdom of the Crystal Skull.
You can view my review for Indy IV over on Twitch (read here). I found the film to be lacking in the script department, though very much fun for fans of Indiana Jones.
::: Indiana Jones and the Kingdom of the Crystal Skull (Official Site)
::: Tim League on the Cannes Red Carpet for Indiana Jones IV Premiere
::: Throw Tim League a Whip
::: Raiders of the Lost Ark (1981) – Japanese Poster Movie Wallpaper
::: Raiders of the Lost Ark (1981) – Movie Wallpaper #2
::: Raiders of the Lost Ark (1981) – Movie Wallpaper #1
::: GreenCine Daily Indy IV Post
::: Quint’s Review on AICN
::: Todd McCarthy on Indy 4
Official still that was used in the original international release of the film.