* Erosion: Mountains are constantly being eroded by wind, rain, ice, and other natural forces. Over 10,000 years, this erosion would have a noticeable impact on the shape and height of the mountain, changing its contours and altering the elevation lines on the map.
* Tectonic Activity: Depending on the mountain's location, tectonic activity (plate movement) could cause uplift, subsidence, or even volcanic activity, drastically altering the mountain's landscape and resulting in a dramatically different map.
* Climate Change: Climate change could affect glacial activity, precipitation patterns, and weather events, all of which can influence erosion rates and shape a mountain over millennia.
* Human Impact: While less significant compared to natural processes, human activity, like mining, deforestation, or construction, could also leave its mark on a mountain's landscape, altering the topography.
In short, the forces of nature constantly shape the Earth's surface, and over a timespan of 10,000 years, the changes to a mountain would be substantial enough to result in a significantly different topographic map.