A bizarre video has emerged of a huge, multi-coloured cloud appearing in the sky in Escazu, Costa Rica.

The footage, shot by Jessie Montealegre on Tuesday, shows a the apocalyptic sky in all its glory.

"Suddenly a massive amount of people stopped and stood still as they were astonished at how the skies opened up," Jessie said.

"It was a nice coincidence that the video was taken on Costa Rican's Independence Day".

The phenomenon is believed to be cloud iridescence.