rugged

sturdy and strong in constitution or construction; enduring; "a rugged trapper who spent months in the wilderness"; "those that survive are stalwart rugged men"; "with a house full of boys you have to have rugged furniture"

वी निर्देशांकों को सख्ती से बढ़ते हुए होना चाहिए.

It was a rugged road going up the mountains.