...that I have seen it spelled several different ways
However,
http://www.carlspackler.com is probably the world's leading authority on this issue, so I would recommend you check out their transcript. It is well established that Gunga is spelled with the "u" instead of "oo", however the debate lies in what exactly comes after that: "laGunga" "gaLunga", etc... IMHO, after having watched the movie dozens of times, Carl corrects his initial pronunciation and follows it up with something that sounds like "GoongalaGoonga", how you really spell it I have no clue
