thanks for responses!

I'm looking to model it as i'm still learning and haven't got round to doing texturing/displacement mapping yet! :blush:

Zbrush i haven't got much of a clue about.

I'm going to try my idea of shattering a flat cubeoid to create shards and arrange them into the formation i want. I think it should be straightforward enough!

I will post back tomorrow with pictures to show you how it went!

thanks again