In a surprising turn of events, two significant sinkholes have emerged on a residential street in Surrey, southwest of London. The unexpected formation has forced the evacuation of approximately 30 homes and left one vehicle precariously positioned at the edge of the chasm. Local authorities have declared this incident as a major event due to its scale and potential dangers. While the exact cause remains uncertain, experts believe that geological factors and water-related issues may be contributing elements. This situation highlights the vulnerability of certain areas to sudden ground collapses and raises concerns about aging infrastructure.
The first sinkhole appeared on Godstone High Street during the night of Monday, rapidly expanding throughout Tuesday. By the following day, it had grown to an alarming size—65 feet wide, 20 feet long, and 16 feet deep. Not far from the initial site, another hole opened up on the opposite side of the road, measuring 16 feet by 16 feet and equally deep. Since then, both cavities have stabilized, ceasing further expansion. Geologists speculate that these formations could be attributed to the region's underlying geology, which consists of sandstones formed over 100 million years ago during the Lower Cretaceous period. These rocks are relatively weak and can erode when exposed to running water.
Andrew Farrant, a geologist with the British Geological Survey, explained that changes in ground composition, possibly triggered by heavy rainfall or a burst pipe, might have caused the collapse. Another theory suggests that the erosion could have been initiated by an old, unrecorded sand mine beneath the road. Vanessa Banks, also a geologist with the British Geological Survey, pointed out that increased housing development in Britain has led to more pressure on aging infrastructure. This, combined with intense rainfall—likely becoming more frequent due to climate change—can put additional strain on older pipes, potentially leading to such incidents.
Despite the dramatic scene, no injuries have been reported. However, residents of around 30 properties have been evacuated as a precautionary measure. One evacuee, Noosh Miri, expressed concerns about the security of her home and uncertainty regarding the extent of the damage. She emphasized that returning to her residence would not be possible for some time. The Surrey County Council is closely monitoring the situation and providing support to those affected. This event underscores the importance of assessing and maintaining critical infrastructure, especially in regions prone to such geological phenomena.