I can't believe there isn't a thread about what was in...

You can google "El Dorado" and come up with a lot of hits about a mythical city and lost treasure (that is what the poem was about). If you saw the movie "The Rundown" (one of the working titles was "El Dorado") with The Rock and Christopher Walken the second and third acts took place in South America and a gold mine undiscovered by most people. And in that movie, and als in 'Pulp Fiction' there was a briefcase with something special that we never saw. As the Rock might say "IT DOESN'T MATTER!" what is in the case, all we need to know is that it is important treasure. Anyway, seriously, google it.