Mandelbulb Tempel (Shader)

What happends if I have a mandelbulb and render it with menger sponge fractal algorithm?
This was the result after some tweaking. I have written this shader in glsl by using Shadertoy.

Techniques:
* Procedural generated in runtime (no models involved)
* Ray Marching
* Menger Sponge & Mandelbulb fractal
* Soft Shadow
* AO by using the result of the ray marching process

Shadertoy: https://www.shadertoy.com/view/wlSSRt