I recently made this video about a cave in Southern Costa Rica. It references some of the NSS's activities in my country during the early nineties. If you know how to contact anyone who was involved in the Costa Rica Project I would appreciate it if you sent them this video.
Please note that the video has SUBTITLES for those who don't speak Spanish.
It's aimed at the non-caver population so it's a bit corny but I wanted it to be immediately catchy for people who don't know much about what we do.
Hope you enjoy! :)