A small, tent-only campground tucked along Sand Creek near the Pinnacles area on the park’s less-visited east side, Lost Creek is the quiet, no-frills alternative to the busier Mazama Campground. Sites are first-come, first-served only, with no reservations and no hookups, just vault toilets and potable water — a genuinely simple setup that rewards visitors who don’t mind a smaller, quieter stay. Its location near the Pinnacles’ eroded volcanic spires gives you an easy, uncrowded add-on hike most Crater Lake visitors skip entirely. Given the tiny number of sites here, arriving early in the day is essential if you’re hoping to snag a spot, especially on summer weekends.