I was visiting the lookout at Ravensbourne National Park in queensland australia to take photos as i have done on many occasions. At first i heard a slight hum and didnt pay much attention to it the next thing i know something flew not very high over my head it actually made me duck and my hair blew around. It sounded like someone shot an arrow right past my head by the time i looked up i could see nothing anywhere it shook me up a little but and about 30 seconds later i continued to take photos after probably another 30 seconds i heard the same noise this time louder i felt the urge to duck again but this time i looked up and for probably half a second i saw what i can only explain as a black arrow shaped object fly just above the tree line into the national park. I stood frozen for probably a minute before i got the courage to go back to my car and get out of there. Ever since then i cant stop thinking about what happened and to be truthfully honest it rattled me greatly i have gone back to the area since but can not bring myself to get out of the car if there is anything you can do to help put my mind at ease it would be greatly appreciated.