Gate of Hell It is difficult to say whether the Gate of Hell is world-famous or infamous. In 1971, former Soviet geologists accidentally discovered this natural gas cave while drilling.

Gate of Hell

It is difficult to say whether the Gate of Hell is world-famous or infamous. In 1971, former Soviet geologists accidentally discovered this natural gas cave while drilling. Due to the lack of preparation in advance, the soil collapsed, forming a large pit with a diameter of 50-100 meters. In order to prevent the leakage of toxic gases, they had to ignite the exhausted gases, which have been burning for nearly 50 years, wasting a lot of resources. Turkmenistan once wanted to extinguish it, look at the fire that is still burning...

Monticello Dam Hole (Glory Hole)

The Glory Hole is located at the spillway mouth of the Montesello Dam in Lake Berryessa, California, USA. It is 21.9 meters wide and over 61 meters deep. The Cave of Glory is slightly higher than the surrounding area to prevent flooding caused by high water levels in the lake. Due to the amount of rainfall, the Glory Cave was not used for ten years. However, due to continuous heavy rains in the past few years, the Glory Cave once again showed a spectacular scene.

Guatemala sinkhole

This hole is not so glorious to say. It was a surface subsidence in the urban area of ​​Guatemala City, the capital of Guatemala, in 2010, forming a terrifying giant pit nearly 20 meters in diameter and 90 meters deep. At that time, it caused 15 people died. According to analysis, this was caused by heavy rain caused by Tropical Storm Agatha at that time.

The Well Of Chand Baori (Indian Moon Well)

You may not believe it, but this well is really a well - a water well. Apparently, the strange stepped wells popular in areas such as western India and Pakistan are beyond our understanding of wells and are simply magnificent structures. Among them, Moon Well is the largest of these stepped wells. The opening on the ground is tens of meters wide and about 20 meters deep. It is surrounded by more than 3,500 narrow steps on three sides, and there is a temple-like building on the other side.

The Siberian Giant Crater

is located in the Yamal Peninsula in Siberia, Russia. There are four places in total. They were discovered by scientists in 2015. The strange thing is that there is a natural gas plant less than 10 kilometers away from the tiankeng . So people are very curious, when did the sinkhole appear? If it appeared later, why didn't people hear any noise? If it came first, why were we completely unaware of its existence when the natural gas plant was built? After investigation, scientists initially ruled out the cause of meteorites, but how they came from is still a mystery.

Sand Dune Pit

is located in the Indiana Dunes National Lakeshore Park in the United States. It was originally a flat sand dune, but a deep pit suddenly appeared and swallowed a 6-year-old boy. Although the little boy was rescued, the attraction was closed for a time. Scientists initially determined that the 22.9-meter-deep pit was formed because old trees and buildings were buried under the dunes and were washed away by quicksand.

Devil's Sinkhole in Texas

This hole is 122 meters deep and more than ten meters wide. It is located in a national park in the United States. The cave is a paradise for bats, with more than 3 million bats thought to live here.

Belize Blue Hole

is the most famous blue hole in the world, located in the Grand Bahama Shoals in Honduras. Seen from a high altitude, it looks like the blue pupils of the earth. The Belize Blue Hole is about 400 meters in diameter and 145 meters deep. It is known as one of the top ten geological wonders in the world. Scientists speculate that this place was originally a large dry hole during the Ice Age. Later, global warming and sea levels rose, resulting in today's spectacular scene.

The Dean Blue Hole in the Bahamas

is located in the Atlantic Ocean with a depth of 202 meters. It is a paradise for diving enthusiasts from all over the world. The water quality here is extremely clear, and there are even very few marine life. You must go and see it if you have the opportunity.

Sansha Yongle Dragon Cave

is located in my country's Paracel Islands . It is the deepest blue hole in the world, with a depth of 300.89 meters.Local fishermen even believe that this is the "site" of the Dinghai needle that Sun Wukong took away. Below is the Dragon Palace, so it is called Dragon Cave.

Xiaozhai Tiankeng

is located in Fengjie County, Chongqing City. It is an important feature of karst landforms. According to scientists, it was formed by the underground underground river colliding with the carbonate rock layer for a long time, causing it to collapse. According to measurements, the Xiaozhai Tiankeng is 622 meters in diameter, 522 meters wide at the bottom, and 666 meters deep.

Bima Sinkhole

is located in Oman and is a famous local tourist attraction. The water cave is naturally formed. In order to facilitate tourists to visit, the locals built dozens of artificial steps to enter. The clear turquoise water makes people feel as if they are in paradise.

Dead Sea sinkholes

are located in Israel. It is said that there are more than 6,000 such sinkholes in the area. Experts say this is the result of the sinking of local groundwater levels.

Kimberley Cave

This is a famous tourist attraction in South Africa with a radius of 1.6 kilometers. In fact, this is a diamond mining pit. According to statistics, a total of 14,504,566 carats of diamonds (approximately 2,722 kilograms) were dug out from here.

Kola Super Deep Borehole

Speaking of holes in the earth, it is natural to talk about the Kola Super Deep Borehole. This is a scientific drilling carried out by the former Soviet Union in the Kola Peninsula. The deepest SG-3 borehole is 12,289 meters deep, which is deeper than the Mariana Trench. However, due to the subsequent economic collapse and even disintegration of the Soviet Union, this number was fixed. As for the strange noises reported on the Internet, they are basically nonsense.

Odoptu OP-11 Oil Well

However, the Kola Super Deep Borehole is no longer the deepest man-made structure in the world, currently only ranking third. Ranking first in the world is the Odoptu OP-11 oil well drilled by Russia on Sakhalin Island in 2011, with a depth of 12,345 meters, surpassing the Ashoshin drilling rig drilled by the United States in Qatar in 2008. The current record of 12,289 meters holds the world title.

Songke Erjing

In terms of drilling holes, our country is not far behind. After all, this also marks the strength of research into the interior of the earth. On April 13, 2014, my country's independently developed Crust No. 1 drilling rig started drilling in the Songliao Basin. After more than four years, it reached 7,018 meters. This is just the beginning. Sun Youhong of the National University of Geosciences said that my country’s Crust 2 is under construction, and the target may even be set at 15,000 meters. Not only is it full of confidence in the title of the third country in the world with 10,000-meter drilling technology, And he also has ambitions to break records from other countries and create history.