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.
south Africa
the worlest biggest chin has now been found to be Dominic crooks as it measures a hole 3 centries long.
The Amazon is the worlds biggest rain forest
The Catholic Church is the biggest charity in the worlds.
the worlds biggest yoyo is about the size of a hobo
as deep mas the hole was when it was a whole hole.
Deep in the Hole was created in 1983.
The worlds biggest island is clearly Green Land its PNG
The worlds biggest selling drink is both Milk and water.
The worlds biggest tin sheep here
That hole is 6 feet deep or 72 inches deep.
Georgia has the biggest aquarium!