A paraglider pilot uses ridge lift to soar along the cliffs at Torrey Pines State Reserve near San Diego, California. The steady sea breeze from the Pacific Ocean is deflected upward by the steep cliffs creating an invisible wave of rising air that the pilot uses to maintain altitude, like a surfer rides a wave of water.
<a href="//commons.wikimedia.org/w/index.php?title=User:Pastelitodepapa&amp;action=edit&amp;redlink=1" class="new" title="User:Pastelitodepapa (page does not exist)">Pastelitodepapa</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>