Episode three begins in Quito, Ecuador, and relates the amazing story of the 16-month Spanish expedition (1541-42), led by Gonzalo Pizarro, to find El Dorado, the mythical land of gold. Crossing the Andes with pack animals, Wood and his team hack a path through the forests, following in Pizarro's footsteps to the Coca river, where they build a balsa raft and sail down to the river Napo, following the route of the conquistadors.

Note: This is part 3 of a series of 4 parts.