Navajo Nation map, with the "checkerboard" area in a lighter shade
<a href="//commons.wikimedia.org/wiki/User:Seb_az86556" title="User:Seb az86556">Seb az86556</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span> using parts of <a href="//commons.wikimedia.org/wiki/File:America-blank-map-01.svg" title="File:America-blank-map-01.svg">America-blank-map-01.svg</a>