The big island of Hawaii is the tallest and largest mountain on the planet from the base to the top (Summit of Mauna Kea), because its base is the abyssal plain at the bottom of the ocean, giving it a total height of more than 10km.
The big island of Hawaii is the tallest and largest mountain on the planet from the base to the top (Summit of Mauna Kea), because its base is the abyssal plain at the bottom of the ocean, giving it a total height of more than 10km.