![[Image - caption immediately follows]](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_vGA6ly19FgysQwoM285Hfrs563u-3efzoLaPlWknKHYnZ7A2uad77MAW9neQA3nUMH0ZF6xk5hfQcc7_fZP6VCPlz4SJd6DUAABGln2XVq1B6DQiC0oYNd9WyP=s0-d)
http://www.loc.gov/exhibits/911/911-maps.html
This is an image of the world trade center using LIDAR imagery. It is good for detecting elevation changes. Notice that the buildings are mapped out and the height of the buildings are color coded. This imagery uses lasers to detect the elevation changes. enjoy!!!!
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