How can I place my model on top of terrain?

Hello. I use Sketchup Pro 2022 on Windows. I need to place a road on a terrain I modeled. I tried using Sandbox tools, but it doesn’t achieve the results I need. Any suggestions? I want to place my road on the gray path I draped over the terrain.

TERRENO.skp (12.0 MB)

YouTube search
https://www.youtube.com/results?search_query=road+over+terrain+sketchup

You can check out the newly released Grade Brush as part of Artisan 2 (paid extension): https://www.youtube.com/watch?v=rr3y-brpqFo