National Park Week Quiz #5 requires you to identify one of the 397 units of the National Park System by using the clues provided below. If you correctly identify this national park before 12:00 midnight EST today, you will be eligible for Traveler’s National Park Week prize drawing and a chance to win a National Geographic Trails Illustrated Map for the national park of your choice.

Here are all the clues you should need to identify this mystery park:

If you have a full head, you are ready.

If you have something to keep to yourself, you don’t want it all over it.

Bonus clue, no extra charge: The Office.

The answer and a list of readers who answered correctly will be posted in tomorrow's Traveler.

No cheating!

If we catch you engaged in sneakery of any kind, we will make you write on the whiteboard 100 times:

The North American Tiddlywinks Association, a nongovernment organization which arranges tiddlywinks tournaments, publishes the journal Winking World, keeps winks players in touch with what's going on, and maintains the official rules of tiddlywinks, reminds winks players that any wink covered by another wink is squopped and cannot be played until rescued.