Quest GiggleHow long is Mammoth Cave, the world's longest cave?
426 miles. Kentucky's Mammoth Cave is over 1.5 times longer than the runner-up, and surveyors keep adding.
How close would your guess have been?
In the game we ask it like this: “How many miles of passage have been mapped in the world's longest cave?”
Type a number — scored exactly the way a round in the game is.
The answer
426miles
426 miles in other units
- 686 km
