This is a "emergency exit coffee table", based on the infinity mirror concept.
The table is 46 cm in height, but you can see about 6.2 meters into it, when the light is turned on. If the light is turned off the table looks like a mirror on the top.
Old ikea tables where cut in half for becoming the side walls and got screwed together. The glas plates on top and bottom are 1 cm in height and were produced for those exact randomly occurring dimensions (80 x 44.5 cm). Some old LED sealing lamp was fitted to the one ladder segment.
The idea came from following YT-Video. See how to build it clean and neat here: