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 …

2023年10月20日 · The Kola Superdeep Borehole, located in Russia, is the world's deepest man-made hole, reaching a depth of 40,230 feet (12,262 meters) or 7.6 miles (12.2 kilometers), surpassing the depth of the Mariana Trench and the height of Mount Everest.

2024年1月2日 · The Kola borehole reached 40,230 feet (12,262 meters) in 1989, making it the deepest human-made hole on Earth. As of 2023, it remains the deepest known hole created by human beings.

2021年5月21日 · The borehole itself was actually made up of numerous holes that branch off from a central hole, the deepest of which — SG-3 — runs 12,261 meters (40,226 feet) deep into Earth’s crust.

2023年11月14日 · This small, rusted metal cap is all that marks the hole, the deepest one ever drilled into the planet. Today, the Kola Superdeep Borehole is capped, a small monument the only evidence of the mammoth structure that once stood there.

2019年5月6日 · This is the Kola Superdeep Borehole, the deepest manmade hole on Earth and deepest artificial point on Earth. The 40,230ft-deep (12.2km) construction is so deep that locals swear you can hear...

2020年2月22日 · Known as the Kola Superdeep Borehole, the deepest hole ever dug reaches approximately 7.5 miles below the Earth’s surface (or 12,262 meters), a depth that took about 20 years to reach.*

2024年6月16日 · The deepest reached 12,262 metres (40,230 ft; 7.619 mi) in 1989, the deepest human-made hole on Earth, and remains so as of 2023. In terms of true vertical depth, it remains the deepest borehole in the world.

2017年6月21日 · The secret behind achieving the target was in drilling multiple holes that were connected to the main hole. After nine years of drilling, the project broke the record of the world's deepest hole, which stood at 9,583 meter and was located in Oklahoma, United States.

2021年6月12日 · From 1970 to 1994, in the western Russian province of Murmansk, the Kola Superdeep Borehole drilled to the deepest point ever reached below Earth’s surface. Housed in this 27-story superstructure, it found high temperatures, gases, fractures, water, and Precambrian fossils, and changed some long-standing scientific hypotheses.