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.
Denali National Park and Preserve
Denali National Park and Preserve is located in the central area of the Alaska Range, a mountain chain extending across Alaska. Its best-known geologic feature is Denali, formerly known as Mount McKinley. Its elevation of makes it the highest mountain in North America. Its vertical relief (distance from base to peak) of is the highest of any mountain in the world. The mountain is still gaining about in height each year due to the continued convergence of the North American and Pacific Plates. The mountain is primarily made of granite, a hard rock that does not erode easily; this is why it has retained such a great height rather than being eroded.