Mystery adventure, fiction ( Peter Thomlinson). This is a very exciting and gripping story set in the jungles of Brazil and Venezuela, and the quest for the famous El Dorado gold. Incidents with dangerous wild animals, not to mention encounters with head hunters and other native tribes, plus some black magic hocus-pocus all add to the suspense. Double dealing and threats as well as actual confrontations all make life difficult for our brave heroes, and often cause the expedition problems which slows down the quest for the yellow gold. This is a good geography lesson also, and readers will learn about all those huge rivers that flow through these regions, including the huge River Amazon.