A sign located at <a href="https://en.wikipedia.org/wiki/Hoover_Dam_(Ohio)" class="extiw" title="w:Hoover Dam (Ohio)">Hoover Dam</a> just in case the 2,583 feet (787 m) long Dam and 680 feet (210 m) long spillway didn't clue you in.
<a href="//commons.wikimedia.org/wiki/User:Sixflashphoto" title="User:Sixflashphoto">Sixflashphoto</a>
<span class="int-own-work" lang="en">Own work</span>