Left photos: both sides of the crater's rain forest.
Right photos: on the floor, middle is where the 1959 eruption came out of. (Meaning "gushing hill" in Hawaiian, Puʻupuaʻi is a gigantic cinder cone that formed as a result of the towering 1,900 foot lava fountains during the eruption of Kīlauea Iki in 1959. As lava from these fountains cooled in the air, it fell back to earth as cinders and built up into the large mound that exists today. )