Crater Lake used to be a mountain. Mount Mazama, it was called. It was not so unlike the chain of dormant volcanoes I’d be traversing on the PCT in Oregon—Mount McLoughlin, the Three Sisters peaks, Mount Washington, Three Fingered Jack, Mount Jefferson, and Mount Hood—except that it was bigger than them all, having reached an elevation that’s estimated at a little under 12,000 feet. Mount Mazama blew up about 7,700 years ago in a cataclysmic eruption that was forty-two times more voluminous than the eruption that decapitated Mount St. Helens in 1980. It was the largest explosive eruption in the Cascade Range going back a million years. In the wake of Mazama’s destruction, ash and pumice blanketed the landscape for 500,000 square miles—covering nearly all of Oregon and reaching as far as Alberta, Canada. The Klamath tribe of Native Americans who witnessed the eruption believed it was a fierce battle between Llao, the spirit of the underworld, and Skell, the spirit of the sky. When the battle was over, Llao was driven back into the underworld and Mount Mazama had become an empty bowl. A caldera, it’s called—a sort of mountain in reverse. A mountain that’s had its very heart removed. Slowly, over hundreds of years, the caldera filled with water, collecting the Oregon rain and snowmelt, until it became the lake that it is now. Reaching a maximum depth of more than 1,900 feet, Crater Lake is the deepest lake in the United States and among the deepest in the world.
I knew a little something about lakes, having come from Minnesota, but as I walked away from Ashland, I couldn’t quite imagine what I would see at Crater Lake. It would be like Lake Superior, I supposed, the lake near which my mother had died, going off blue forever into the horizon. My guidebook said only that my first view of it from the rim, which rose 900 feet above the lake’s surface, would be “one of disbelief.”
I had a new guidebook now. A new bible.
As I walked during those first days out of Ashland, I caught a couple of glimpses of Mount Shasta to the south, but mostly I walked in forests that obscured views. Among backpackers, the Oregon PCT was often referred to as the “green tunnel” because it opened up to far fewer panoramas than the California trail did. I no longer had the feeling that I was perched above looking down on everything, and it felt odd not to be able to see out across the terrain. California had altered my vision, but Oregon shifted it again, drew it closer in. I hiked through forests of noble, grand, and Douglas fir, pushing past bushy lakes through grasses and weedy thistles that sometimes obscured the trail. I crossed into the Rogue River National Forest and walked beneath tremendous ancient trees before emerging into clear-cuts like those I’d seen a few weeks before, vast open spaces of stumps and tree roots that had been exposed by the logging of the dense forest. I spent an afternoon lost amid the debris, walking for hours before I emerged onto a paved road and found the PCT again.
It was sunny and clear but the air was cool, and it grew progressively cooler with each day as I passed into the Sky Lakes Wilderness, where the trail stayed above 6,000 feet. The views opened up again as I walked along a ridgeline of volcanic rocks and boulders, glimpsing lakes occasionally below the trail and the land that spread beyond. In spite of the sun, it felt like an early October morning instead of a mid-August afternoon. I had to keep moving to stay warm. If I stopped for more than five minutes the sweat that drenched the back of my T-shirt turned icy cold. I’d seen no one since I left Ashland, but now I encountered a few day hikers and overnight backpackers who’d climbed up to the PCT on one of the many trails that intersected it, which led to peaks above or lakes below. Mostly I was alone, which wasn’t unusual, but the cold made the trail seem even more vacant, the wind clattering the branches of the persevering trees. It felt colder too, even colder than it had been up in the snow above Sierra City, though I saw only small patches of snow here and there. I realized it was because back then the mountains had been moving toward summer, and now, only six weeks later, they were already moving away from it, reaching toward autumn, in a direction that pushed me out.