newberry national volcanic monument, oregon, usa

america american and ash beds block boulders brimstone butte central cliff clouds cone continental cordillera crater cumulus desert environment expanse extensive flow flows geology hike hiking land landscape lava lavafield molten monument national nature newberry north northwest number oregon outdoor outdoors overlook pacific panorama park path plate plates recreation remote rocks sign states stone stream subduction such tectonic tectonics trail travel trees tuff united usa volcanic volcanism volcano volcanoes west western wild wilderness zone