Iriri River Terra do Meio Ecological Station. The river varies greatly in volume depending on the season, and in the dry season include waterfalls, rocks and rapids. The Iriri River flows through the Tapajós-Xingu moist forests ecoregion. The river is rich in fish, including many species found only here and in the Xingu. Large sections remain unexplored due to its remoteness in a region surrounded by Amazon rainforest, and sections with strong current and cataracts. Iriri River The Iriri River () is a large tributary of the Xingu River in Brazil, in the state of Pará. It is long making it the
South American U20 Championships in Athletics Medals are awarded for individuals and relay team members for the first three places in each event. Trophies are awarded to teams in each category (male and female) with the highest total number of cumulative points in the entire competition. In addition, a trophy will be given to the country for the overall title. A trophy is also presented to both a male and a female athlete for the most outstanding performance. South American U20 Championships in Athletics The South American Junior Championships in Athletics are the South American championships in the sport of athletics which is open for those