Duplo

Ok, I wanted to share this image with all of you, and tried writing a nice blog post to it, but it did not pan out. Basically what I wanted to say was that:
I play a lot with duplo these days.
I built this sculpture some days ago and then took a photograph of it, or rather through it.
It turned out pretty nice.
And then I wondered if you could figure out how I did it.
Can you? (Oh yea, I only used regular 2x2 and 2x4 pieces.)