Big hole in the ground discovered in Negros Oriental, getting bigger due to continuous rainfall.
A sinkholes was found along the Hagtu-Tagukon area in the boundary of Mabinay, Negros Oriental and Kabankalan, Negros Occidental. This hole in the ground usually caused by some form of collapse of the surface layer. I may also form in high and dry places and may capture surface drainage from running or standing water.
It occurs in urban areas due to water main breaks or even sewer collapses, also from the over
pumping and extraction of groundwater and subsurface fluids. They are common where rock below the land surface is limestone or other carbonate rock, salt beds, or in other rocks, including gypsum that can be dissolved naturally by circulating ground water.
Negros Oriental Mayor Ernesto Uy of Mabinay stated, awaiting for the initial investigation report of the Mines and Geo-Sciences Bureau of the Department of Environment and Natural Resources in Region 7 on the formation of sinkholes, found in the last barangay of that upland municipality, Wednesday. He believed that sinkholes rains and flowing water had eroded sediments that gradually filled them up, extended farther down from the surface the first time they were observed.
MGB-7 team, visited the site of the sinkholes at the Malaiba River in Barangay Hagtu, Mabinay told him, there could be a larger hole underneath that must have caused the depressions on the surface. The sinkholes found was located located in what many believe to be an earthquake fault, and said to be getting bigger and bigger because of the continuing rains in the area.
Sinkholes may also form from human activity including collapse of abandoned mines and salt cavern storage in salt domes. It also form when natural water-drainage patterns are changed, or new water-diversion systems are developed. IMAGE/PHILIPPINE STAR