In elevation data modeling there is a wealth of knowledge to be had in the field of geography. The use of contour lines (as demonstrated below) is one of the most important things to look at when identifying an area for any variety of activities. Whether it be hiking, working, flying, etc. these allow us to know not only the shape of the landscape but any possible issues that you could run into when doing any variety of activities in these areas. These allow us to view how areas are eroding away by how steep an area might become over time. There are many of other uses to them but these are just a few. Using elevation data models we can also utilize 3D mapping which can allow us to see the shape of the land without having to judge it on maps with just contour lines. This is a newer technology and is reshaping the way we are able to not only view our lands but develop plans as well as traveling. There is also using radar which is how we can get the 3D mapping but it comes out in a more sporadic manner with radar waves hitting the land and causing this to map all the different elevation changes. While this can miss some parts of the mapping process it is one of the most used methods especially underwater and can allow us to work up a rough shape for most areas in a fairly easy manner. Using all these methods together radar, contours, 3D mapping and combine that with referencing to satellite imagery to get a good view on the actual objects in the areas and the general shape of it. Then you can come up with some pretty accurate elevation mapping.
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