He also has some amazing IMAX footage of cenotes, among other caves, in his film Ancient Caves, which is still playing on a few IMAX screens, though it's run is mostly over. https://www.youtube.com/watch?v=MSZL9YbXDGs
Thanks so much for sharing this! Quite wonderful. I'd love to go back with my 360 camera to get some footage because flat screen video never quite catches the feeling of being in those kinds of spaces.
He also has some amazing IMAX footage of cenotes, among other caves, in his film Ancient Caves, which is still playing on a few IMAX screens, though it's run is mostly over. https://www.youtube.com/watch?v=MSZL9YbXDGs