at a quick glance , it's angle and posture  instantly suggests
( to me , anyway ) that it's a  large flat plane radar panel

http://www.wonderland.org.nz/RusRadar.html
middle of page , right.




On 12 Oct 2005 20:33:30 -0700, miso@sushi.com wrote:

http://www.lazygranch.com/images/a51pan/thing_plo.jpg
As seen from the power line overlook when back lit by the setting sun.
It's probably 15 to 20ft tall based on Joshua trees as seen on the
lower ridge in the photograph.