
Borders that split houses and lives
View / Create
Answer
Natural anomalies that defy science
View / Create
Answer
Places of extreme isolation
View / Create
Answer
Hidden worlds beneath our feet
View / Create
Answer
YOUR GOAL
Master of Earth's strangest places
schopenhauer Son Doong Cave
Down inside Son Doong, a hidden river makes the clouds rise and rain!

schopenhauer Mexico's Naica Cave contains some of the largest natural crystals ever found.

schopenhauer Sort bizarre underground wonders by depth to discover Earth's strangest hidden worlds.
Derinkuyu discovery: The ancient underground city of Derinkuyu was rediscovered in 1963 by a local man who knocked down a wall in his basement while renovating.
Existing, occurring, or operating under the surface of the earth. Derinkuyu, an ancient Turkish city carved eighteen stories deep, once sheltered twenty thousand citizens during conflicts.
In which desert is the burning Darvaza gas crater, often called the 'Door to Hell,' located?
In which decade was the underground city of Derinkuyu accidentally rediscovered?
What unique atmospheric phenomenon can be found inside China's massive Er Wang Dong cave?
Why must visitors to Mexico's Naica Giant Crystal Cave wear specialized ice-cooled suits?
What mineral makes up the giant, pillar-like crystals found in Mexico's Naica Cave?

