Originally the name comes from a myth from the Muisca peoples during the early 1500's in the Andes (what is now Colombia). The myth tells of the legend of the Golden Man, or El Dorado. This came to be known as an actual place, an empire, where this golden king lived. There were many treacherous expeditions undertaken during the 1500's in order to find this place, true Indiana Jones styles (Sir Walter Raleigh tried to find it too).
We toiled and sweated through the thick Amazonian underbrush, air thick with humidity, all to find el Dorado.