The Pu'u O'o cinder cone, the active vent on the southern flank of the Kilauea volcano, UNESCO World Heritage Site, Big Island, Hawaiian Islands, United States of America, North America

active aerial aerials big island color image cone contemporary day geology hawaii hawaii volcanoes national park hawaiian islands high angle view horizontal kilauea landscape landscapes national parks natural phenomena natural world nature nobody north america outdoors photography physical geography pulu o scenics smoke smoking steam steaming surface processes topography travel travel destinations usa united states of america volcanic cones volcano volcanoes world heritage site action america american americas color colour daytime hi mountain outside triangle us united states us usa volcanic pu'u o'o