Source - http://www.geology.enr.state.nc.us/doqq.html
DOQQ or Digital Orthographic Quater-Quad is a digitized image that has been taken from the air. DOQQ is used to measure the true distance between places and things. It is the actual picture of a piece of land. Also this kind of map is corrected with the use of pixels that will help with the latitude and longitude lines. The map above is a DOQQ of a place in North Carolina, which if you look at it kind of looks like a google maps or earth image.
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