Void start platform

The stone platform is a 33×33 square of stone with a single block of cobblestone in the center. It is created at the world spawn of a Superflat world on initial generation if  biome and   are set in the preset code.

Generation
The stone platform spawns from block positions (-8,3,-8) to (24,3,24), and thus the player spawns at Y=4. This structure is most easily accessible through "The Void" preset but it still generates if different layers are specified, even if it gets engulfed.

Structure
Stone platform is platform made of stone and cobblestone.

Trivia

 * The player first spawns right above the platform, even if there are layers of full opaque blocks above it, causing suffocation.