You just had to hop on the bandwagon. lol

I didn't even know there were caves in Puerto Rico, so this video was a nice watch for me, despite the fact I still don't have a clue as to what the Harlem Shake is supposed to be.

Yeah, there are a lot of caves and caverns in Puerto Rico! Cuevas de Camuy and Cavernas de Camuy are the most famous, followed by Cueva Ventana which has a beautiful view at the end of it. That video was shot at Cuevas de Aguas Buenas, which are lesser known and less explored that the others.