This system is considered an oligotrophic, highly oxygenated, piedmont river. The usual low nutrient levels found in its waters gives way to less bacterial life, and therefore reduced oxygen consumption. The high levels of oxygen accumulate due to the fast, white water. The dominant substrate in the lower sectors is sand and clay, in the form of clay banks, sandy flats/beaches, and sand/pebble bottom. As you reach the headwaters, the dominant substrate becomes pebbles, rocks, and boulders. The rocky substrate is of course, more conducive to crystal clear waters, and is just the case once you reach this sector. Especially fascinating, is the manner in which the area visibly changes before your eyes as we make our way upriver, allowing you to be witness to this gradual change. Aside from clear water and free-stone, waterfalls become more common coming down from the jungle to feed the river. Eventually, our journey takes us to the source of the river itself in the core of a remote mountain range covered by perpetual primary-growth rainforest. This journey will show you the entire headwaters sector, leaving you with a first-hand explorers point of view of a remote, pristine Amazonian river!
The type of terrain found in this region of the Bolivian Amazon is not easy to traverse. As you can expect, the going will not be easy. After all, this is wilderness in its highest expression. Most of the fishing is done by wading in the river, through slippery rocks and boulders, and often times steep banks or fast moving water. Sometimes a jungle hike will be necessary in order to cut through to some areas, therefore requiring us to negotiate tough up and down hill jungle. The jungle floor has a lot of uneven ground, rocks, and the occasional drainage creek. For those of you who have experience exploring the wilderness in search of that trophy catch, you know half of what to expect. The other half are the unexpected and often times rough things the jungle throws at you. The terrain itself, coupled with these external factors (rain, beating sun, insects, cold south winds), can sometimes make this adventure quite challenging, mentally and physically. Winning the mental battle during a day out fishing is more than half the win already. Our staff will be there at all times to help you through the physical part, and making sure to the best of our ability, that you will have a safe and successful expedition.