This message contains spoilers.
I am playing the 1992 LucasArts adventure game, which I bought on GOG during its recently-completed summer sale, and I am stuck in the desert, even while using a cheat book--*Prima's Secrets of the Games: CD-ROM Classics* chapter 13, "Indiana Jones and the Fate of Atlantis", pages 219-256.
After getting the Sunstone (one of the three items needed to open the gates to Atlantis) by scaring the businessman Alain Trottier in Monaco; flying with Sophia Hapwood to Algiers; trading with Omar the shopkeeper in the back alley for a spittoon; trading the spittoon with the grocer for a squab (after several attempts to trade other items); giving the squab to the beggar in exchange for an all-day balloon flight pass; and piloting the balloon not to the nomad camp (for I was unable to do so) but to the middle of the desert, I am completely stuck to the point where I must restart; the game autosaved at that point.
Can anyone help? Thank you.
There's a fine line between "pleasantly full" and "movement is possible but not a good idea".