What is the purpose of the dark cloud in The Witness?

At one point in The Witness, you can aim a reflection of one of the lasers at a dark gray cloud, and it will light up. Is there any point to this? Is it simply an easter egg? Or is this a puzzle of some sort?

In case it helps, I have beaten the game, but not 100%'ed or gone through a second time.

the-witness

Pictures about "What is the purpose of the dark cloud in The Witness?"

What is the purpose of the dark cloud in The Witness? - White Clouds on Black Background

What is the purpose of the dark cloud in The Witness? - Blue Sea Under Blue Sky

What are the black towers in The Witness?

The Desert Obelisk is one of six large black structures found on the island in The Witness. It's purpose is directly tied to that of the many hidden Environmental Puzzles, and solving any of the nearby puzzles will light up a corresponding symbol, and reveal the symbols of other nearby puzzles.

Is there a map in The Witness?

The Witness Boat and MapThe map and boat can be first found together in the Jungle area of the island. In the southern part of this area is a path psudo dock made of rocks. Follow the path and you'll find a simple puzzle.

How many environmental puzzles are in The Witness?

That makes for a total of 523 puzzles, not including environmental puzzles hidden around the world....How Do I Know Which Puzzles I Have Left In The Witness?Lake ObjectRepresentsLanternsLasersFountainsObelisksFlowersAudio logs(Yellow flowers for The Caves)ClamsBunkers1 more row•Jan 26, 2016

Let's Circles and Lines, The Witness pt. 15, The Dark Cloud

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Mikhail Nilov, Anna Tarazevich, Georgina Escobar, Riccardo Bertolo