10 Amazing Attractions In The United States.

7.Mauna Kea – World’s tallest mountain

Mauna Kea is a dormant volcano on the island of Hawaii. About one million years old, Mauna Kea is the highest point in the U.S. state of Hawaii, standing 13,803 ft above sea level. However, much of Mauna Kea is below sea level, when measured from the ocean floor, its height is 33,100 ft, more than twice Mount Everest.