You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages aicontinue="Herndon1.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Coarse_Gold1.png" timestamp="2010-03-10T18:03:45Z" url="https://wiki.farwestern.com/images/d/da/Coarse_Gold1.png" descriptionurl="https://wiki.farwestern.com/index.php/File:Coarse_Gold1.png" ns="6" title="File:Coarse Gold1.png" />
      <img name="Coarse_Gold_Photo1.jpg" timestamp="2010-03-10T19:50:26Z" url="https://wiki.farwestern.com/images/a/a1/Coarse_Gold_Photo1.jpg" descriptionurl="https://wiki.farwestern.com/index.php/File:Coarse_Gold_Photo1.jpg" ns="6" title="File:Coarse Gold Photo1.jpg" />
      <img name="Coarse_Gold_Photo2.jpg" timestamp="2010-03-10T19:51:17Z" url="https://wiki.farwestern.com/images/b/b1/Coarse_Gold_Photo2.jpg" descriptionurl="https://wiki.farwestern.com/index.php/File:Coarse_Gold_Photo2.jpg" ns="6" title="File:Coarse Gold Photo2.jpg" />
      <img name="Dairyland1.png" timestamp="2010-03-10T18:03:55Z" url="https://wiki.farwestern.com/images/7/76/Dairyland1.png" descriptionurl="https://wiki.farwestern.com/index.php/File:Dairyland1.png" ns="6" title="File:Dairyland1.png" />
      <img name="Firebaugh1.png" timestamp="2010-03-10T17:54:16Z" url="https://wiki.farwestern.com/images/4/46/Firebaugh1.png" descriptionurl="https://wiki.farwestern.com/index.php/File:Firebaugh1.png" ns="6" title="File:Firebaugh1.png" />
      <img name="Firebaugh_Photo1.jpg" timestamp="2010-03-10T20:04:00Z" url="https://wiki.farwestern.com/images/e/e9/Firebaugh_Photo1.jpg" descriptionurl="https://wiki.farwestern.com/index.php/File:Firebaugh_Photo1.jpg" ns="6" title="File:Firebaugh Photo1.jpg" />
      <img name="Friant1.png" timestamp="2010-03-10T18:42:59Z" url="https://wiki.farwestern.com/images/6/61/Friant1.png" descriptionurl="https://wiki.farwestern.com/index.php/File:Friant1.png" ns="6" title="File:Friant1.png" />
      <img name="Friant_Photo1.jpg" timestamp="2010-03-10T20:07:08Z" url="https://wiki.farwestern.com/images/a/ac/Friant_Photo1.jpg" descriptionurl="https://wiki.farwestern.com/index.php/File:Friant_Photo1.jpg" ns="6" title="File:Friant Photo1.jpg" />
      <img name="Friant_Photo2.jpg" timestamp="2010-03-10T20:08:23Z" url="https://wiki.farwestern.com/images/c/c5/Friant_Photo2.jpg" descriptionurl="https://wiki.farwestern.com/index.php/File:Friant_Photo2.jpg" ns="6" title="File:Friant Photo2.jpg" />
      <img name="Herdon1.png" timestamp="2010-03-10T18:04:07Z" url="https://wiki.farwestern.com/images/7/71/Herdon1.png" descriptionurl="https://wiki.farwestern.com/index.php/File:Herdon1.png" ns="6" title="File:Herdon1.png" />
    </allimages>
  </query>
</api>