A giant concrete dome filled with radioactive dirt, smack dab in the Pacific Ocean
In 1958, the United States tested the 18-kiloton “Cactus” nuclear device on Runit Island in the Pacific. 20 years later, Cactus’ 350-foot-wide crater was filled with radioactive soil and covered with a 100,000-square-foot concrete dome. Worst vacation ever? The $239 million Cactus Dome, which is on Runit in the Enewetak Atoll, holds 111,000 cubic yards…