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A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet.
4 Αυγ 2023 · In 2022, scientists discovered a 630-foot-deep (192 meters) sinkhole containing an ancient forest and dense overgrowth in southern China. Here are some of the biggest known sinkholes on Earth,...
The Great Blue Hole, a giant submarine sinkhole, near Ambergris Caye, Belize. The following is a list of sinkholes, blue holes, dolines, crown holes, cenotes, and pit caves. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer.
Kola Superdeep Borehole SG-3. The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
2 Ιαν 2019 · No matter how sturdy the ground may look, sinkholes can appear suddenly and without warning, reminding us of how untameable nature really is. When sinkholes occur out in the wilderness, creating impressive caverns instead of swallowing up buildings, they can be beautiful and glorious to behold.
3 Ιουλ 2024 · A sinkhole is a hole in the ground that forms when water dissolves surface rock. Often, this surface rock is limestone , which is easily eroded , or worn away, by the movement of water. In a landscape where limestone sits underneath the soil, water from rainfall collects in cracks in the stone.
2 Νοε 2023 · Both of these geological features are sinkholes, formations that are much more than holes in the ground. Though many are less than 100 feet (30 meters) deep, sinkholes can look like ponds, cover hundreds of miles or fit discreetly in your backyard [source: USGS].
