[Yosemitest]

Here is what 15 Trillion dollars look like.
The blocks of money are stacks of $100 bills worth $10,000 each.
Welcome to the 2011 United States Federal Debt.
2012 is already slated at $16.4 Trillion.

[Graewoulf]

How deep into the Earth would one have to dig to bury a single stack of 100 dollar bills whose total value was 17 trillion dollars?

Clues:

1.) The thickness of all denominations of paper/rag US money is identical.
2.) The thickness of a 100 dollar bill is 0.0043 inches.