How long is Hang Son Doong cave?
more than 5 km long
What does "Hang Son Doong" mean?
Mountain River Cave
What is the longest river in the world?
the Nile river
What's inside the cave?
(a fast) river
How old is the Hang Son Doong Cave?
about 3 million years old
Where is the Colosseum?
in Italy
What grows in the cave?
plants and trees
How long does it take to walk from the nearest road down to the entrance of the cave?
three days
Where is this place? (the Zhangjiajie Park)?
in China
How tall are the stalagmites?
70 meters tall
Hang Son Doong is the ............ cave in the world.
largest
What is the tallest building in the world?
Burj Khalifa
In what year did Ho Khanh discover the cave?
in 1990
Are these stalagmites or stalactites?
stalactites
What is the hottest Ocean in the world?
the Indian Ocean