About 7,700 years ago Mount Mazama blew itself apart and collapsed, leaving a caldera that slowly filled with nothing but rain and snowmelt. The result is Crater Lake: 1,943 feet deep — the deepest lake in the United States — and a blue so intense that first-time visitors tend to go quiet at the rim. From Portland it's about 255 miles south, down the Willamette Valley and over the Cascades.
Make it a loop and a long weekend: Silver Falls and Salt Creek Falls on the way down OR-58, a full day on the 33-mile Rim Drive, and home along the North Umpqua River past Toketee Falls. The catch is snow — the park averages more than 40 feet a year, and the full loop is usually only open from July into October. Let Wanderply build your version around your dates and narrate the volcano's story as you drive the rim.