English Rocky Butte Cited by user Ceranthor on 15 Oct 2018 Rocky Butte is an extinct volcanic cinder cone butte in Portland, Oregon, United States.
English Boring Lava Field Cited by user Ceranthor on 10 Oct 2018 The Boring Lava Field is an extinct Plio-Pleistocene volcanic field zone with at least 32 cinder cones and small shield volcanoes lying within a radius of 13 miles (21 km…