<http://schema.org/description>
"Man has come a long way since the times of the caveman, yet people are still fascinated by caves. These dark worlds are home to complex ecosystems waiting to be discovered. Take this quiz to see how much you know about cave biology."^^<http://www.w3.org/2001/XMLSchema#string>
<http://animals.howstuffworks.com/animal-facts/cave-biology-quiz18.htm>