Halemaʻumaʻu crater is a pit crater located within the much larger summit caldera of Kīlauea in Hawaii Volcanoes National Park. The roughly circular crater floor is 770 metres (2,530 ft) x 900 metres (2,950 ft) and is 83 metres (270 ft) below the floor of Kīlauea caldera, located at coordinates (19°24′36″N155°17′11″W).