The phrase is spelled rugged terrain.
You spelled terrain correctly. Example: Looking over the terrain, the park ranger noticed a fast-advancing fire.
The correct spelling is "terrain" (a land surface environment).
Rolling terrain is the type of terrain in Kansas.
it is the terrain of Venus
what are uruguay's terrain
i had to cross rough terrain to go to my ranch in mexico.
What is the terrain of mesopotamia
Blue terrain
Hilly and semiarid terrain.
Hiroshima is a flat terrain.
It is a rough and dry terrain
The hill country is rough terrain, for hiking. I prefer mountainous terrain.