The spelunking definition is exploring caves, it's usually reffered as a hobby. A person who explores caves is called a spelunker. Here you will find AWESOME VIDEOS of spelunkers in caves from all around the world. There's also the term urban spelunking which involves people exploring abandoned buildings. If you are a spelunker or a person who likes to be around nature then this site is perfect for you. Spelunking can be very fun, but can also be dangerous. It's always best to be with people that have experience and good judgment with you. Anyways enjoy the videos!!