2 separate DWG files

[decorators3]

Hi  I've received the Contours DWG, and it fits with the existing DWG terrain perimeter file ( which did not have contours in it). I'm  looking for guidance again on how to approach the various terrain features like slopes and valleys, considering there are many polylines.

 

I've attached both files .. 

 

Cheers

Levina

ACAD-25221-PR1-RevC (3).dwg contours.dwg