Another way to go might be multireplication along a path. The hardest part would be to make a path that is fairly close to what you want. If you can find a 2d pict that is straight on of the shape you want, you might be able to use that as a template. or still yet another way might be to use a terrain derived from such a straight on 2d pict. (you might be able to draw something like you want (as pictured on its side)scan it into your computer, clean it up in photoshop, and use that for a pict for your terrain using clipping brackets. when you get something you like, turn the terrain 90 degrees. )