Chief among these were Crater Lake - Wikipedia, the free encyclopedia
. Although the early examples are gone—cinder cones Crater Lake National Park travel guide - Wikitravel
easily—there are at least 13 much younger cinder cones in the park, and at least another 11 or so outside its borders, that still retain their distinctive cinder cone appearance.
There continues to be debate as to whether these minor volcanoes and vents were parasitic to Mazama's Crater Lake Lodges at Crater Lake National Park.
and system or if they were related to background Oregon Cascade volcanism.