Mauna Kea
Mauna Kea ( or , ) is a dormant volcano on the island of Hawaii. Its peak is above sea level, making it the highest point in the state of Hawaii. Most of the mountain is under water, and when measured from its oceanic base, Mauna Kea is the tallest mountain in the world measuring over . Mauna Kea is about a million years old, and has thus passed the most active shield stage of life hundreds of thousands of years ago. In its current post-shield state, its lava is more viscous, resulting in a steeper profile. Late volcanism has also given it a much rougher appearance than its neighboring volcanoes due to construction of cinder cones, decentralization of its rift zones, glaciation on its peak, and weathering by the prevailing trade winds. Mauna Kea last erupted 6,000 to 4,000 years ago and is now considered dormant. The peak is only about higher than its more massive neighbor, Mauna Loa.
Maui County, Hawaii
According to the U.S. Census Bureau, the county has a total area of , of which is land and (51.6%) is water. The islands that comprise Maui County correspond to the remnants of the ancient landmass of Maui Nui. The highest point in the county is the peak of Haleakalā at . Haleakala is a shield volcano located on the eastern side of the island of Maui.
As of the 2000 Census, there were 128,094 people, 43,507 households, and 29,889 families residing in the county. The population density was 110 people per square mile (43/km²). There were 56,377 housing units at an average density of 49 per square mile (19/km²). The racial makeup of the county was 28.90% White, 1.40% Black or African American, 0.37% Native American, 33.01% Asian, 10.72% Pacific Islander, 1.36% from other races, and 22.24% from two or more races. 7.8% of the population were Hispanic or Latino of any race.