A group of builders in Australia have found an incredible way to lay a wall – and it’s baffling people across the internet.
Workers in Teralba, New South Wales, filmed themselves carrying out the trick as they built a new structure on Monday.
Before the four bricklayers started filming they perfectly lined the bricks along the already built wall like dominoes
Then as the camera begins to role one of them nudges one of the end bricks, sending the others cascading forward.
They all fall one-by-one in a perfect line, until the last brick has fallen.
But then the domino effect unexpectedly starts happening in reverse.
When the bricks finally stop moving they are have all slotted into place perfectly flush with one another.
Anyone hoping to find out they did it may not get much of an explanation from the foursome behind it.
One said: “All we did was shoot a video of capping the wall using the technique that we filmed.”
Tumblr user in-the-garage seems to have found the answer – and has shared it in a handy diagram for anyone who’s confused.