Topography Map

A topographic map is a map that uses contour lines to describe elevation changes. Usually, they include bodies of water and other natural features.
Topographic maps are important because they are typically more accurate than a common map. They are also vital to engineers and architects to do their jobs.

This is a topographic map of Mount Blackburn in Alaska that I created using Google Earth:

Blue line is 5,000 ft
Red line is 5,000 ft
Green line is 6,000