The term "uneven terrain" refers to a surface or area that is not level, smooth or evenly sloped. It can include irregularities such as hills, rocks, bumps, holes, depressions and other natural or man-made obstacles that make walking, driving or navigating difficult. The phrase often used in context of outdoor activities like hiking, camping, mountain climbing, off road driving etc., where the terrain is rugged, rocky, uneven or steep. It can also refer to urban areas with cobblestone streets, broken sidewalks, potholes and other irregularities that make walking difficult.