Crater Lake National Park was established in 1902 and is located in Southern Oregon. It’s the fifth oldest national park in the United States and the only one in Oregon. The park encompasses the caldera, the remnant of Mount Mazama which violently erupted 7,700 years ago to form the lake.
Water in the lake is fed by rain and snow. It’s one of the most pristine lakes on earth and is the deepest at 1949 feet in the USA. The caldera rim ranges from 7,000 to 8,000 feet. There are no outlets from the lake – the water either evaporates or is lost to seepage. Check it out if you are driving through Southern Oregon.