ref  julia who posted foll stating that it is a natural 'fall streak hole' !!!! LOL

Several PerthNow readers have woken to a sight described as “out of this world” after spotting a puzzling UFO-shaped cloud in the sky.

The unusual cloud formation even had experts baffled, with the Bureau of Meteorology taking some time to investigate what the strange phenomenon may be.

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suggest you look at some images ref. HAARP

http://www.colinandrews.net/Cloud-Radar-Circle-Australia-2010-0116.html

.................manmade not an alien in sight.....sorry to disappoint