Thanks Panga for your time and suggestions. It's too bad there's no easy way around this.

On a related note, I've heard making topo with Rhino 3D may be a better alternative, and then perhaps exporting from there to SU. If anyone has any experience with this, please do share. Thanks.

Here's the skp file.

I have already had some luck trying to piece it together, Panga, as you said, but because the contours are so geometric and varied, it's a process of trial and error. It's difficult to spot the contours or corner that are causing the clipping issues.

Thanks for the help.

contours.skp

I imported contour lines made from AutoCAD and used the "From Contours" tool from Sandbox, yet I'm getting some strange clipping issues where the terrain seems to be bypassing or overriding set contour lines. You can especially notice the issue in the ravine in the center.

Anyone have this issue before and any ideas on how to fix it? I've searched the forums and couldn't find anything.

PS I've already tried the Simplify Contour Lines plugin, but that just messes up things completely.

Thanks,
Andrew

![After Sandbox "From Contours" Tool](/uploads/imported_attachments/4K7Q_bb.jpg "After Sandbox "From Contours" Tool")