At seven points along the Columbia River Basin, an unprecedented endeavor is unfolding. Here, where rivers meet and indigenous people once gathered, the Confluence Project explores the intersection of environment, Native American culture and history. Confluence Project is a collaborative effort of Pacific Northwest tribes, renowned artist Maya Lin, civic groups from Washington and Oregon and other artists and architects. Each of its seven sites features an art installation by Ms. Lin that interprets the area's ecology and history, encouraging the visitor to reflect on how the surroundings have changed over time. Each references a passage from the Lewis and Clark journals