Investigators trying to uncover details about what goes on inside the mysterious top-secret US military base Area 51 stumbled across what they believe was a massive fire at the secretive base. The couple, who posted the video to YouTube, were stunned by the huge plume of dark smoke that appeared to form a mushroom cloud when viewed from afar.

The pair, called Jimmy and Jackie, drove through the Nevada desert to the base that the US government only confirmed existed in 2013, despite being one of the country’s worst kept secrets, and spotted the smoke while approaching from Groom Road. Jimmy said in the video: “We are still driving down groom road here and we noticed that there is like weird smoke over here. What could be going on?” FULL REPORT