Our next set of images comes from one of our tours from the GREAT RIVERS OF THE AMAZON series. The guides (from right to left) for this boat-based tour on the Rio Aripuana were Bret Whitney, Moacir Fortes a.k.a. Junior (our captain!), Marcelo Barreiros, and Micah Riegner. Looks like a tough life! Photo by participant Chuck Holliday.