A dive to 157 ft in the Great Blue Hole in Belize C.A. in 2004. This is on the east side of the hole in the cavern area. The structures start at 100ft and go down from there. I have a business card hanging on the wall at 170ft under the overhang in a natural D-ring formation. If you are trained for deep diving feel free to zip tie yours to mine. Deep diving can and is dangerous do not attempt if not trained. We did this dive from the Belize Aggressor III.