Infrared technology gave a whole new face to cartography. By utilizing the infrared light spectrum in photography, mappers can better isolate specific features for comparison or contrasting. Colored infrared, such as the one below can even us color to reall make an image stand out!
Found - http://www.outintheboonies.com/Hal_Scott/doq_map.jpg
This blog is a map catalog in which I am displaying fifty different types of maps and a tid-bit of information that looks into the purpose of the map!