Above is the Kola Superdeep Borehole, the deepest hole ever dug by humans (using drills). Astoundingly, the hole reaches 7.6 miles deep, which is deeper then the Mariana Trench and Mt. Everest is tall! It is located in Murmansk, Russia.
Here's the Kimberley Big Hole! It's the biggest hand dug hole on earth. (It was dug using pick axes and shovels). Located in Kimberley, South Africa
Here's the Sarlac Pit!
It is a carnivorous pit... it slowly digests its prey after 1000 years.
This is TON 618. The biggest BLACK HOLE we have found SO FAR... (ominous tone).
This is the Great Blue Hole, a hole in the ocean 400 feet deep! It is located east of Belize.
This is Mel's Hole, a legendary bottomless hole found around nine miles west of Ellensburg, Washington! The supposed hole was first cited on the Coast to Coast radio show by a person named Mel Waters, thus the name Mel's Hole.