Sudan’s Al-Hamdalab al-Shakriya Village Hit by Large Sinkhole, Experts Warn

Citizens in Al-Hamdalab al-Shakriya village, located east of Rufa’a city in Sudan’s Al-Jazira state, observed an abrupt subsidence of the ground surface, resulting in the formation of a large cavity and triggering widespread concern among residents over possible extension to adjacent areas.

Geological Authority Confirms Sinkhole Phenomenon

The General Authority for Geological Research identified the event as a scientifically recognized phenomenon — a sinkhole, or sudden ground collapse. Such occurrences involve rapid downward displacement of the earth’s surface caused by movement or erosion of unconsolidated materials beneath the surface layers.

The authority emphasized that while sinkholes are documented globally, determining the precise cause at any specific location requires field inspection and integrated geological and hydrogeological analysis. This includes assessment of rock and soil composition, groundwater levels, rainfall runoff patterns, and factors affecting subsurface layer stability.

Natural and Human Triggers Identified

Geologist Hamad Bashir stated that sudden sinkholes — or abrupt crustal subsidence — may arise from both natural and anthropogenic causes that compromise the load-bearing capacity of subsurface soils or rocks. These include dissolution of carbonate or saline formations by groundwater.

He cited natural contributors such as tectonic activity and soil shrinkage, alongside human-induced factors — most notably intensive groundwater extraction, which can alter soil structure and generate subsurface voids.

Risks Extend Beyond Surface Collapse

Bashir added that hazards associated with this phenomenon extend beyond surface deformation. They may impact buildings, roads, water supply networks, gas pipelines, and other critical infrastructure components.

Carbonic Acid Formation and Limestone Dissolution

Geologist Muhammad Abdulrahman Aqeed explained that rainwater absorbs atmospheric and soil-based carbon dioxide — particularly that released during organic matter decomposition — forming carbonic acid.

As this acidic water percolates through fractures into deeper strata, it reacts with calcium carbonate-rich rocks, especially limestone and dolomite. Over time, this interaction may gradually dissolve portions of the rock mass, creating subterranean cavities that, in some instances, culminate in sudden surface collapse.

No official explanation has yet been issued by Sudanese authorities regarding the cause of the subsidence in Al-Hamdalab al-Shakriya, nor have details been released concerning the affected area’s dimensions or the sinkhole’s depth.

Source: Al-Jazira State Broadcasting and Television Authority