A great practical joke!
In an elevator in London, when the doors opened, the floor was completely gone.
If that had been me, I would have quickly raced to the stairs.
This however, was a just an illusion.
The people at the Southside Shopping Centre in Wandsworth, London were shocked to see this bottomless floor.
Artist, Andrew Walker, worked with amusement park, Alton Towers Resort, to create a demo for their upcoming ride Nemeses Sub-Terra.
The ride will take people on a 3D illusion tour of an underground network of caves.