Caving is one of the [B]riskiest[/B] activities. In fact, it is so risky that many people have warned against it. Caving involves people trying to explore various underground pathways and tunnels. This involves people trying to crawl through tight passages under the earth. Many people claim that caving is an extreme sport. However, I have never seen any kind of competition when it comes to caving, so is it really a sport? Do cavers "compete" against each other?