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.
List of volcanoes in the Hawaiian – Emperor seamount chain
The chain can be divided into three subsections. The first, the Hawaiian archipelago (also known as the "Windward isles"), consists of the islands comprising the U.S. state of Hawaii (not to be confused with the island of Hawaii). As it is the closest to the hotspot, this volcanically active region is the youngest part of the chain, with ages ranging from 400,000 years to 5.1 million years. The island of Hawaii is comprised by five volcanoes, of which two (Kilauea and Mauna Loa) are still active. Lōihi Seamount continues to grow offshore, and is the only known volcano in the chain in the submarine pre-shield stage.