Oahu,Hawaii,USA,topographical artwork. North is at top. Vegetation is green,urban areas are white and water is blue. Oahu is the third largest,but most populous of the Hawaiian Islands. The state capital,Honolulu,is on the island,located below Punchbowl crater (the middle crater). The bottom crater is Diamond Head. There are no active volcanoes on Oahu. Honolulu International airport is at lower centre,with one of its four runways offshore. To the left of the airport is Pearl Harbour,home to a US Navy base. On the west shore is the Waianae Mountain range and in the east the Koolau Mountain range. They are separated by the Oahu Plains |