National Geographic : 1926 Apr
THE EXPEDITION MAKING ITS WAY UP THE ROARING WHITE CHANNEL OF THE RIO URARICOERA On a rock in the lower center may be made out the figures of half a dozen men and two canoes. Rapids such asthis extend forIoomiles on the Uraricoera above Maraca Island. They are not especially difficult for canoes, but require time, as thecraft must bepulled upbylong ropes (see, also, illustration, page 407). The heavier-laden canoes, requiring more water to float, were forced up through theswiftest water and frequently were swamped. Cases of gasoline, foodstuffs, and trade goods floating downstream were rescued by Indian helpers. Ononeoccasion theexpedition's entire stock of cigarette papers disappeared in swirling waters, and thereafter the thin bark of a certain tree, split into thin, flexible layers, had tobeused for the "makings.