Mountain
Heights of mountains are typically measured above sea level. Using this metric, Mount Everest is the highest mountain on Earth, at . There are at least 100 mountains with heights of over above sea level, all of which are located in central and southern Asia. The highest mountains above sea level are generally not the highest above the surrounding terrain. There is no precise definition of surrounding base, but Denali, Mount Kilimanjaro and Nanga Parbat are possible candidates for the tallest mountain on land by this measure. The bases of mountain islands are below sea level, and given this consideration Mauna Kea ( above sea level) is the world's tallest mountain and volcano, rising about from the Pacific Ocean floor.
Sandy Hill (mountaineer)
Hill began mountaineering as a teenager; her first summit at age 13 was Disappointment Peak in the Teton Range. In 1992 she began a quest to become the first American woman to scale the Seven Summits, the highest peaks on each continent. She summitted Aconcagua (1992), Denali (1992), Vinson Massif (1993), Mount Elbrus (1993), Mount Kilimanjaro (1993), Mount Kosciuszko (1994), and Puncak Jaya (1995). Hill finally reached the Mount Everest summit in 1996, thus becoming the second American woman to scale the Seven Summits, following Mary "Dolly" Lefever.