lava flows and cinder cones at craters of the moon national monument and preserve

lava flows cinder cones craters moon national monument preserve massive flow spatter desolate landscape great volcanic rift zone south-central idaho travel destination tourism eco wilderness volcano volcanoes small erupt eruptions basaltic eruption scenic US holocene fields otherworldly barren eerie extreme terrain famous place landmark park natural outdoors rock rocky outcrop arid ash dramatic dry geology geologic remote violent