LIDAR

http://cintos.org/LiDAR_images/index.html

LIDAR or Light, Detection and Ranging is a type of remote sensing in which it measures distance to a object using light. The map above is of Rex, NC. According to the website, the map "was generated in the Global Mapper GIS program using LiDAR data from the USGS. The colors shown are an indication of topographic elevation, from 16 m AMSL in the lower right, to 76 m in upper left."