Dave.Largent wrote:
Pinnacles Valley lets you view some of the leftovers after the eruption of Mount Mazama which later collapsed and formed Crater Lake in Southern Oregon. The Pinnacles are a group of volcanic pumice spires, colored various shades of grey and brown. They were formed by erosion along the south edge of the steep-sided canyon. Some cones are especially tall and graceful and taper very gradually to a sharp point.