The kills are the geometry here. Where people died is where the corridors are, and where a picture of the level has been rendered it is drawn underneath in the same world coordinates the game server reported.

This is two axes of three, so a map built in layers stacks one floor on another. The height filter is the way back out of that.

Drag the plot to move it, or pinch it with two fingers. Zoom sets how close in it sits and Reset puts it back.