The lovely, deep valley of 'Iao features the 'Iao Needle, a natural rock pinnacle presiding over the 'Iao stream and surrounded by the walls of the Pu'u Kukui Crater. Once used as a natural altar, the 2,250-foot stone pillar covered in green, is a basaltic core that has survived eons of swirling water..'Iao Valley is the site of one of the most famous battles that occurred in 1790 and changed Hawaii history forever when King Kamehameha I destroyed the Maui army in an effort to unite the Hawaiian Islands...