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The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic system, vertical datum).

In topography, prominence characterizes the height of a mountain or hill summit by the vertical distance between it and the lowest contour line encircling with no higher summit.

Data source: 50 Most Prominent Peaks on Earth (unless otherwise noted)

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