A once smooth road surface has cracks and fractures, plus a large pothole. While plate tectonics forces work to build huge mountains and other landscapes, the forces of weathering gradually wear those rocks and landscapes away. Together with erosion, tall mountains turn into hills and even plains.
Weathering The rate of weathering happens on mountains in the same way it does everywhere else. However, rocks at higher elevations, are exposed to more wind, rain, and ice than the rocks at lower elevations are. This increase in wind, rain, and ice at higher elevations causes the peaks of mountains to weather faster.