DEM

http://www.humboldt.edu/geology/courses/geology350/350_maps_airphotos.html

This is an example of Digital Elevation Model. These types of maps can be used for many different types of analysis such as precipitation patterns or wind patterns but they represent one key feature which is elevation. This map here shows the elevation of the Lomerias Muertas in Chittenden, California. One can notice though the in the top left portion of the image we can see white caps which means these are the highest points of the range.