It shows the massive weather phenomenon spanning across much of the sky.

As the camera pans around, the cloud seems to have perfect 90-degree corners to give it the appearance of a square.

The video sparked wild speculation after being posted to Facebook.

After seeing the clip, Lino Nappa said on Facebook: "In my opinion someone is trying to manipulate the elements."

The infamous High-Frequency Active Auroral Research Programme (HAARP) was set up by the US government in 1993, and run by the US Air Force and US Navy.

Although mostly top-secret, critics accuse HAARP of attempting to weaponise the planet.

The US Department of Defence has allegedly attempted to harness and control everything from the weather to earthquakes and use them as weapons.

HAARP was based on a US Air Force base in a remote part of Alaska, far from civilian eyes, until military involvement officially ended in 2014.