How can I get out of here?

Hint 1 of 5:

Certainly not through the turnstile.
You need to find a passageway back up.

Hint 2 of 5:

You must have obtained the pitchfork and been given a gift for getting the
pitchfork.

Hint 3 of 5:

The hole upstairs in the house is the exit. Try going through it.

Hint 4 of 5:

Do you notice that you're almost exactly two feet short of the exit?

Hint 5 of 5:

And that an item in your inventory is two feet thick?