5th Edition. This map began life as an academic map called Amazonia. 500 copies were printed for an ecological conference in Hawaii on rainforest preservation. The scientists attending provided so much input that we added everything we could and ended up with a travel map to the Amazon River basin. It's a beautiful map for anyone exploring the southern parts of Colombia or Venezuela or the eastern portions of Peru and, of course, northern Brasil. It is the only map in print that shows the entire river and all of its tributaries. Unfortunately, it is almost out of print and cannot be reproduced in its current format.