Checking the light and camera system became redundant as we moved into the first section of the cavern, where there was still plenty of room for us all to fit, and enough light still pouring through the entrance to feel comfortable.
Canon G15, Nauticam NAG15, Inon s2000 (x2), Sola Photo 800, Inon UWL-S100 ZM80
1/15 sec, f/4.5, ISO200
Another shot of Bill moving into position before entering the cavern.