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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]
Big Hole is a large maar (explosion crater) in the Fort Rock basin of Lake County, central Oregon, northeast of Crater Lake, near Oregon Route 31. It is approximately 6000 ft (1820 m) across and 300 feet (91 m) deep. [3] It is close to another smaller, but less-eroded maar crater, Hole-in-the-Ground.
As material slid into the hole formed, it closed the vent and the process repeated, eventually forming the huge hole. [3] Blocks as large as 26 feet (8 m) in size were flung as far as 2.3 miles (3.7 km) from the crater. [4] To the west of Hole-in-the-Ground is an even bigger maar, 1.1 miles (1,820 m), but older and more eroded, called Big Hole.
Just off Interstate 40, near the Reedy Creek entrance to William B. Umstead State Park, is a hole in the ground so deep that someone standing at the bottom is 180 feet below sea level.. The ...
SpaceX’s rocket explosion in November 2023 created a massive hole in the Earth's ionosphere, providing scientists with a rare opportunity to study its effects.
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.
A massive blue hole just showed up near Mexico—and new lifeforms may be inside. What will scientists find 900 deep down? A Massive Blue Hole Just Showed Up Near Mexico.
This huge company further worked on the Big Hole until it came to the depth of 215 metres, with a surface area of about 17 hectares and perimeter of 1.6 kilometres. By 14 August 1914, when work on the mine ceased, over 22 million tons of rock had been excavated, yielding 3,000 kilograms (14,504,566 carats) of diamonds.