Virgin Islands, U.S.
If you are considering taking up a profitable hobby, base it on what is special about you. What are some skills do you have that others don't? You want to combine your joy with something unusual that other people are unaware of. This makes for a great way to start
Caving can be great hobby for anyone geographically able to enjoy it. You have to prepare yourself and know what you're doing. A guide will help you when exploring dark and deep caves.