Thousand Lakes Wilderness is a protected mountain landscape in northeastern California within the southern Cascade Range, designated in 1964 and managed as part of Lassen National Forest. Its terrain reflects both volcanism and glaciation, preserving the remains of the larger Thousand Lakes Volcano and the basin-and-ridge topography, lakes, and ponds formed by eruptions and later ice carving. Crater Peak is the forest’s highest point, and Hall Butte may have erupted as recently as 500 years ago. Though it has far fewer than a thousand lakes, the area includes several major lakes, trout waters, and habitat for deer, bear, pika, birds, and occasional elk, while limited access helps preserve its quiet character.