The Mono Craters is a 17-km-long chain of rhyolite domes and flows that were erupted from 35,000 to about 600 years ago. All but four of the 24 exposed domes and flows of the Mono Craters are less than 10,000 years old. The most recent eruptive episode occurred between A.D. 1325 and 1365, during which time there were several explosive eruptions and five separate lava flows that oozed onto the surface, including Panun Dome and North Coulee flow. |