The phrase "rugged terrain" means a rough or uneven land that is difficult to travel across due to its roughness, such as mountains, hills, or rocky areas. Full definition
These animals were bred for performance rather than appearance - and especially for their stock sense and innate ability to work long hours on rugged terrain with little human guidance. (petwave.com)
It's driving across rugged terrain in the great outdoors. (cnbc.com)
This type of robot could be useful for traveling across rugged terrain and navigating hard - to - reach spaces and their soft exterior makes them safe for human interaction. (treehugger.com)