A gigantic sinkhole, measuring about 300 feet in diameter, has opened up in a farmland in the state of Puebla, Mexico. The hole, which has continued to rapidly expand since it first appeared a week ago, is threatening to swallow a nearby house. The crater continues to grow and now measures almost 328 feet , with a maximum depth within the hole of just over 65 feet.According to a New York Post report, the sinkhole, is now filled with groundwater.
Sinkholes are common in limestone areas, where water dissolves the carbonate rocks, forming large cavities and conduits underground. But sinkholes, collapsed underground cavities, can form in any rock type soluble in water or erodible by flowing water, like gypsum, salt deposits, or fine-grained sediments. Sinkholes can be just a meter across, or more than 100 meters wide and deep.
A sinkhole occurs when the ground below the land surface cannot support it and can happen for many reasons, according to the U.S. Geological Survey. Beatriz Manrique, the secretary of the Environment of Puebla, told local news outlets that it remains too early to know the exact cause of the sinkhole. But he added that a softening of the farmland could have caused it because the area was established over what used to be a pond or reservoir, called a “jagüey.”