English: Crater created by the Cactus shot of Operation Hardtack I. The 18-kt detonation occurred on 1958. május 5. on Runit Island, Enewetak Atoll. The crater had a diameter of 105 meters and a maximum depth of 11 meters with a 2.5 to 4-meter lip. In 1979–1980 this crater was used as a burial pit to inter 84,000 cubic meters of radioactive soil scraped from the various contaminated Enewetak Atoll islands. It was then covered with a concrete dome, the Runit Dome.