Mauna Kea is a dormant volcano on the island of Hawaii. Its peak is the highest point in the state of Hawaii making the island of Hawaii the second highest island in the world. Most of the mountain is underwater; when measured from its oceanic base, Mauna Kea is over 10,000 m (33,000 ft) tall and is the tallest mountain on Earth.
Mount McKinley, known as Denali, is the highest mountain peak in North America. Denali is the third most prominent and third most isolated peak on Earth, after Mount Everest and Aconcagua.