Quest GiggleHow long is the Great Wall of China according to the 2012 survey?
21,196 km. That is more than half the Equator — and two and a half times longer than anyone thought before the survey.
How close would your guess have been?
In the game we ask it like this: “China's 2012 survey measured the Great Wall at how many kilometres?”
Type a number — scored exactly the way a round in the game is.
The answer
21,196km
21,196 km in other units
- 13,171 miles
