We are a nonprofit charity working to protect, promote, and enhance Crater Lake National Park, home to the deepest lake in America - and purest on Earth! The Crater Lake National Park Trust works to help protect, promote, and enhance Crater Lake National Park, its unique water purity, and its value for human inspiration & knowledge. The Crater Lake National Park Trust works to help protect, promote, and enhance Crater Lake National Park, its unique water purity, and its value for human inspiration and knowledge. We envision a future in which Crater Lake National Park is widely recognized as an Oregon icon and a national treasure; in which the Park serves as a thriving laboratory and classroom; and in which every Oregonian and growing numbers of others feel a deep connection and love for Crater Lake.