Sinkholes are depressions or holes in the ground caused by the collapse of a surface layer, often occurring in areas known as karst landscapes. These landscapes are characterized by soluble rock ...

Hunan is known for its karst topography, where underground limestone ... it can suddenly collapse, forming a sinkhole that rapidly drains surface water. Voting ends in Greenland election dominated ...

forming underground caves and cracks called karst formations (Figure 2a). Further erosion of bedrock along the cave ceilings caused collapses leaving visible sinkholes. Figure 2b shows areas of on ...