Ages 15-18. Join us for this very popular multi-day whitewater rafting trip on the Lower Main section of the Salmon River. The Salmon River is Idaho's most iconic river. It is the longest free flowing river in the lower 48 states and has a wealth of Native American and early mining history. The river is also a part of the Frank Church River of No Return Wilderness, winding it's way through some o f the most remote wilderness area in all of Idaho. We are excited to be partnering with Wild Science Explorers (WSE) for this adventure!