Following the draining of magma from Pu‘u ‘Ō‘ō on Ap

Following the draining of magma from Pu‘u ‘Ō‘ō on April 30, 2018, the crater was roughly 356 meters (1168 feet) deep. The upper part of the crater was flaring, with the deepest portion a narrower cylindrical shaft. Rockfalls from the crater walls have enlarged portions of the crater, while rockfall debris has filled in the deepest portions, creating a much different crater geometry today. Today, the deepest portion of the crater is 286 meters (938 feet).