Mountain trivia - What do you know about mountains?

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There are 14 mountains on Earth having an elevation of 8,000 meters or more above sea level. They are known as the eight-thousanders: http://en.wikipedia.org/wiki/Eight-thousander Altitudes of 7,000-8,000 meters (23,000-26,200 feet) and above are known as the "death zone;" up there is about 1/3 as much oxygen as at sea level. Everest is the highest of the eight-thousanders, with bedrock rising as high as 8,844.43 meters (29,017.16 feet) above sea level. While distance from sea level is the most recognized method of measuring a mountain, it is not the only method. If you measure the height of a mountain from base to summit, you'll find that Mauna Kea, a volcanic island in Hawaii, rises over 10,200 meters (33,464.57 feet) above the ocean floor. Also, the Earth is not a perfect sphere. 'The summit of Chimborazo in Ecuador is 2,168 m (7,113 ft) farther from the Earth's centre (6,384.4 km or 3,967.1 mi) than that of Everest (6,382.3 km or 3,965.8 mi), because the Earth bulges at the Equator. However, Chimborazo attains a height of only 6,267 m (20,561 ft) above sea level, and by this criterion it is not even the highest peak of the Andes.' (Wikipedia, the free encyclopedia) What really impresses me is vertical relief above local terrain. From the ground up, Alaska's Mt. McKinley is a spectacular sight, with vertical gains ranging from 5,300-5,900 m (17,300-19,300 ft). Nanga Parbat's Rupal Face is considered the highest mountain face in the world, rising 4,600 m (15,000 ft) above its base. Nanga Parbat's Rakhiot Flank rises even higher: up to 7,000 m (22,965.88 feet) from the Indus River valley, but becomes less impressive due to its low slope; this elevation is gained over 27 km (16.78 mi). To my knowledge, the world's most dangerous mountains to climb are currently Annapurna, Kanchenjunga, and K2, respectively. Nanga Parbat was considered the deadliest of all mountains through the first half of the twentieth century, and known as the "Killer Mountain." But a relatively easy ascent has since been standardized via the Kinshofer route, a buttress on the Diamir face first ascended by Toni Kinshofer in 1962. The death rate on Annapurna stands today at approximately 40%. What can you tell us about mountains?