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I need some help figuring out how to model some rocky ground. Basically, I want to model the Ludendorff Bridge and I'm in the process of trying to create the ballast-like area of the train tracks, for example:

You can see a train track situated on the rocky ground I'm trying to create.

How would I go about doing this? I've tried creating individual rocks and then dropping a bunch of them with the Drop To Ground add-on, but it doesn't really give the effect I'm going for.

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  • $\begingroup$ It depends on how detailed you need the gravel to be. Do you need each stone to be a complete 3D mesh? Or can a flat texture with some normal mapping suffice? $\endgroup$ – gandalf3 Apr 16 '14 at 22:12
  • $\begingroup$ I probably want each stone to be individual meshes because there are going to be some close ups. $\endgroup$ – 24Duckies Apr 17 '14 at 9:33
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A particle system with Dupli-group is probably a good way to go.

I'd start by creating a dozen or so rock templates. Using modifiers, you can come up with this pretty fast:

enter image description here

Then create a new plane that will serve as the base of where the rocks will go, and create a particle system to it. The particles system controls where the rocks will go, distribution, size, etc.

enter image description here

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