Tron Legacy rock wall reproduction - how to start?

[dmn]

I'm not sure if this is the best place to post this question, since it's more about set reproduction than props per se, so if people know of a better place, please let me know.

I've always loved the "natural" rock landscape from Tron Legacy, sort of an eroded geometric stone. I need an accent wall at my place and rather than try to put up vanilla stone tile or textured wallpaper, I thought I'd explore what it would take to reproduce this sort of stonework from the movie. The problem is I don't quite know where to start. I imagine this was sculpted from layers of rigid foam. My naive approach would be:

1. Cut out a variety of sizes of parallelograms with the same angle and different thicknesses
2. Stack them, going to progressively smaller sizes, and arrange the way I want them. Glue.
3. Add cracks spanning sections and remove the outer-most layer where the cracks represent lost "sheets"
4. Brush texture and lines
5. Paint

My questions:

Is this reasonable? Can anyone suggest a better technique?
What would be a good material to use for this?
Paint and texturing advice?

Super happy learning as I go on this but thought I'd ping this group for at least some starting ideas before I waste too much money. Thank you!

 

[joberg]

Pink foam, hot wire, cutter, some acetone for "distress" lines, paint, texture and good luck

 

[Clutch]

You could slather the foam with Durham's water putty. Maybe let it dry some and texture stamp it with crumpled up aluminum foil.

 

[tuko99x]

Sir!
I’m so glad I’m not the only one that thinks this look is amazing. I have no idea how to accomplish this but I want to recreate this look for my backyard fencing. If you learn anything helpful I’d love to hear from you. Trheaume@charter.net. Thank you in advance.