View from the Shark Valley observation tower in Everglades National Park, Florida.  In the front, the "borrow pit" is visible, which was used as quarry for building the service road and tower.
<a href="//commons.wikimedia.org/wiki/User:Domob" title="User:Domob">Daniel Kraft</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>