...a secret military base which blasts eerie sirens and has strange light shows late at night

• Filmmakers are investigating an area in South Australia for strange occurrences
• Locals have reported hearing sirens and seeing strange lights near military base
• A group of YouTubers spent the night at the area to investigate the 'testing'
• The military site is reportedly used for weapon testing within the area 

A pair of aspiring filmmakers are working to prove a secret 'Area 51' base is operating off a remote highway in South Australia.

Eerie sirens and mysterious bursts of light have been witnessed by locals living near a military base 80km north of Adelaide and in the nearby town of Parham.

The Port Wakefield Proof and Experimental Establishment carries out weapon and environmental testing for the Navy, Army and Air Force. 

Often weapons are tested by being fired over the surrounding beaches. 

But a pair of anonymous filmmakers are convinced the site is more sinister and are in the process of filming a documentary to expose what kind of 'testing' goes on at the base.  

Twin brothers Danny and Michael Philippou, who have more than six million followers on their YouTube channel RackaRacka, became aware of the documentary and decided to visit the site themselves. 

The brothers and a group of friends spent a night camping in Parham and soon found themselves being told to leave by security as strange sirens filled the area.

A group of YouTubers visited the Port Wakefield Proof and Experimental Establishment in South Australia to investigate reports of strange sirens and bursts of light