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            This is a file from the  Wikimedia Commons. Information from its  description page there is shown below.  Commons is a freely licensed media file repository.  You can help. 
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           | Description | 
           
             English: This shaded relief image of Mexico's Yucatan Peninsula show a subtle, but unmistakable, indication of the Chicxulub impact crater. Most scientists now agree that this impact was the cause of the Cretatious-Tertiary Extinction, the event 65 million years ago that marked the sudden extinction of the dinosaurs as well as the majority of life then on Earth. 
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           | Date | 
           February 2000 | 
          
          
           | Source | 
            http://photojournal.jpl.nasa.gov/catalog/PIA03379
             - Transferred from  en.wikipedia
 
             
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           | Author | 
           NASA/JPL-Caltech | 
          
          
           Permission ( Reusing this file) | 
           
             PD-USGOV-NASA. 
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          This image or video was catalogued by Jet Propulsion Lab of the United States  National Aeronautics and Space Administration (NASA) under Photo ID: PIA03379.   This tag does not indicate the copyright status of the attached work. A normal  copyright tag is still required. See  Commons:Licensing for more information. 
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         Licensing 
        
         
          
           | Public domainPublic domainfalsefalse | 
          
         
         
          
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           This file is in the  public domain because it was solely created by  NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See  Template:PD-USGov,  NASA copyright policy page or  JPL Image Use Policy.) | 
           
            
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       File usage
       
        The following pages on Schools Wikipedia link to this image (list may be incomplete):
        
        
       
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