Simmo - Your "grow your own grass" tutorial & Examples were fantastic. Here's the result, after a few hours of mucking around with different densities, randomness, colouring, and height. As per our earlier discussions, I put the grass only on the taxiway edges (so we dont kill the FPS), and it looks fantastic at virtually no detectable loss. The LOD is also calculated automatically (Thanks Tom), meaning that unless your 100m or so from the grass, you dont see it... FANTASTIC! Look forward to really adding some depth to NZCH now =) - CK.