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.
Black Tooth Mountain
Black Tooth Mountain () is located in the Bighorn Mountains in the U.S. state of Wyoming. The peak is the second highest in the range after Cloud Peak, which is only to the south, and the summit is located in the Cloud Peak Wilderness of Bighorn National Forest. The sharp dark profile of the mountain resembles a dark tooth or fang, hence the name. Because of the steep terrain, Black Tooth Mountain is one of the hardest mountains to climb in the Bighorns. Many of the trails up the mountain are unmarked which adds to the difficulty of reaching the summit. Mount Woolsey is an adjacent summit only to the southeast. Another high peak of the Bighorns known as Hallelujah Peak is situated along a knife-like ridge known as an arête to the northeast. Several tiny remnant glaciers can be found on the north slopes of Black Tooth Mountain.