Nature · Guess the stat
Guess the real numbers behind the world's mountains, see how everyone else guessed, and get the source.
About how tall is Mount Everest above sea level?
Guess, see the crowd, get the real number. One ranked attempt per day.
Real figures with their sources. All Mountain facts →
more than 33,500 ft (10,210 m)
From base to peak that makes it taller than Everest, though much of the mountain is underwater.
Source: NOAA National Ocean Service oceanservice.noaa.gov
Chimborazo, in Ecuador
Earth bulges at the equator, so Chimborazo's 20,564-ft summit is over 6,800 ft farther from Earth's center than Everest's.
Source: NOAA National Ocean Service oceanservice.noaa.gov
65,000 km (40,389 miles)
It winds around the globe like the stitching on a baseball and is the largest single volcanic feature on Earth.
Source: NOAA National Ocean Service oceanservice.noaa.gov
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Each question asks you to guess a real number about mountains. After you answer you see how everyone else guessed, then the real figure and where it comes from.
Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.
Every stat links to its source, such as government statistics agencies, research organizations and industry groups. Figures are checked against the source before they go live.
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