Popularly known as caving, spelunking is the recreational sport of exploring caves. Learn about exploring the subterranean universe of mazelike passages, tight crawl spaces, vast chambers, deep crevices, cascading waterfalls and bizarre creatures by taking this quiz.
Question 1 of 20
How many caves in the United States are open to the public for guided tours and expeditions?
Question 2 of 20
What is one big mistake you should not commit when you are exploring caves?
Question 3 of 20
How are caves being used today?
Question 4 of 20
What type of landscape are caves commonly found in?
Question 5 of 20
What percentage of land in the United States is most prone to having caves?
Question 6 of 20
What type of caves are most common?
Question 7 of 20
Who is a speleologist?
Question 8 of 20
What type of bacteria also helps form caves?
Question 9 of 20
What are speleotherms commonly known as?
Question 10 of 20
What cave formations hang down from the ceiling?
Question 11 of 20
What type of cave dwelling animals are bats and raccoons?
Question 12 of 20
What type of cave dwelling animals are spiders and crickets?
Question 13 of 20
What type of cave dwelling animals are blind and some don't even have eyes?
Question 14 of 20
What is the temperature like inside a cave?
Question 15 of 20
What do we call cave microbes that could help us understand the earliest life forms on Earth?
Question 16 of 20
What place in France is famous for prehistoric cave paintings?
Question 17 of 20
What is the exploration of subway tunnels, utility shafts, sewage systems and abandoned buildings in cities known as?
Question 18 of 20
What type of caving should beginners normally avoid?
Question 19 of 20
What is one of the most extreme and dangerous type of caving?
Question 20 of 20