That is hard to say because not all holes are even seen. The deepest hole was probably dug by some sort of burrowing animal or insect.
By "biggest" do you mean largest in volume, or simply the deepest? The deepest hole yet dug is called the Kola Borehole and is a bit over 40,000 feet (12,262 meters) deep.
No one never dug a hole that deep before
shaft
its called a big hole..
what layer of earth would you be on if you dug 592 kilometers deep
Too deep
The fox dug a deep hole for her puppies.
An oasis is a hole dug so deep by wind that water actually fits in the hole!
Everyone who had been sent to holes had dug a hole 5 feet wide and 5 feet deep. There is no certain character who a hole. Although the main character is Stanley Yelnats.
This can be answered in two ways.Man has gone "in person" as deep as the deepest mine, TauTona in Carletonville, South Africa at 3.9 kilometres.Boreholes have been made even deeper.The present holder of this record is the Kola Superdeep Borehole in Russia. It reached 12.262 kilometres in 1989.
This depends on how deep the hole is dug, for the out house. If it's dug too deep then the contents may seep into the water level and end up in a near by lake.
A Burrow or Underground hole is often dug just deep enough to fit the family.