We finally got our hands on the photos from Aquanauts’ Cavern Diver course last fall at Thailand’s Thong Pha Phom near Kanchanaburi and what a great surprise they were.

ANDI Instructor Roger M. Smith led the course for Aquanauts interns (and now PADI instructors) Greg Hannigan, A.J. Rankin and Scott Clark. Hannigan was behind the lens and shot a bundle of photos. The best ones were without the direct strobe, which too often illuminates the suspended particles in the cavern waters.

After a bit of Photoshop “channel mixing,” that restored proper color values and added luminence, what you see below is how things looked to the divers on the three-day course. (more…)