You have to see it to believe it, so the saying goes. But in the case of one very unusual carpet, seeing may not help at all.
This mesmerising black and white geometric patterned floor looks as if it is covering up huge craters underneath that are so big that you would be able to step into them, wrote the Daily Mail.
But it's all an illusion, as the ground and the carpet is actually flat.
The carpet - believed to be covering the floor at a branch of the French electronics shop chain FNAC - appears to be swelling, with large craters in the middle of the ground.