Oʻahu, known as “The Gathering Place,” is the third largest of the Hawaiian Islands. It is home to about two-thirds of the population of the U.S. state of Hawaii. The state capital, Honolulu, is on Oʻahu’s southeast coast. Along with the rest of the Hawaiian Islands, Oahu is one of the largest and northernmost islands of Polynesia. The length of the shoreline is 227 miles (365 km). The island is the result of two separate shield volcanoes: the Waiʻanae and Koʻolau Ranges, with a broad “valley” or saddle (the central Oʻahu Plain) between them. The highest point is Kaʻala in the Waiʻanae Range, rising to 4,003 feet (1,220 m) above sea level.