During World War II, the US military built bunkers on top of Koko Crater with a railroad leading to its summit. In 1966, the air force ceded administration of Koko Crater over to the City of Honolulu.
In World War II, the US military erected bunkers on top of Koko Crater connected by a railroad to its summit. By 1966, the air force handed over the administration of Koko Crater to the City of Honolulu.