What natural feature is typically associated with sinkholes?

Sinkholes are depressions or holes in the ground caused by the collapse of a surface layer, typically occurring in areas where the bedrock is composed of limestone, gypsum, or salt that can be easily eroded by water. This process is known as chemical weathering, which leads to the formation of underground cavities. When the roof of these cavities becomes too weak to support the weight above, it collapses, resulting in the characteristic depressions.

Irregular terrain with depressions is a direct consequence of this geological activity. Sinkholes often create a distinctive landscape, differing from flat plains or mountainous regions, where such depressions are not typically present. Additionally, coastal cliffs and plains and valleys do not exhibit the pronounced irregularity associated with the terrain affected by sinkholes. Thus, the defining feature of landscape associated with sinkholes is indeed the irregular terrain marked by surface depressions created through subsurface dissolution and collapse processes.