The Kola Superdeep Borehole is the deepest manmade hole, and deepest artificial point, on Earth, measuring at 40,230ft feet.

Scientists have announced the discovery of what they describe as the world’s deepest blue hole, off the coast of Mexico. Taam Ja’ Blue Hole (TJBH), is located in Chetumal Bay off the Yucatan ...

Scientists just discovered the deepest sinkhole in the world off the coast of the Paracel Islands, disputed territory in the South China Sea. The Sansha Yongle Blue Hole is almost 1,000 feet deep ...

The World’s Deepest Man-Made Hole We can’t move on to the next natural wonder without mentioning a key human-made superlative. In 1970, Soviet geologists began digging a hole into the frozen ...

Explorers have found the deepest shipwreck ever identified ... To give a sense of how deep the resting place is, 98% of the world's ocean bottom is less than 6,000m deep. Only a few places ...

World’s highest and deepest waterfall: Some of you may refuse to believe it, but the world’s highest and deepest waterfall lies underwater! Known across the world as the Denmark Strait ...

America might have landed on the moon, but Russia drilled the deepest man-made hole on Earth. Since the early 1960s, scientists have attempted to drill down to the Earth's mantle. It took 20 years ...

Hole 93 is our deepest intersection to date, suggesting that the core zone remains open at depth... All key pieces in the process of growing Lion Zone!" – commented Ken Williamson, VP of ...

Deep Sleep claims to be the deepest overnight accommodation in the world Found at the foot of a 1,375ft (419m) slate mine in north Wales The mine dates back to the 19th Century The log cabins can ...

Dean's Blue Hole is the second deepest sinkhole in the world and the deepest one filled with salt water. A habitat for a variety of fish, the sinkhole can be traversed by even novice swimmers and ...