I haven't been there for several years but I used to go quite often. We taught classes down there for a few years. They were really trying to get the place in shape then. I know they built a nice shower house, had a small campground and lots of stuff sunk in the quarry. They have the fuselage of the plane that was crashed in US marshalls or fugitive or whatever, a school bus, phone booth, an old cabin cruiser etc, etc. I have been there when the vis was good, 20-30 feet but more often it was less. The best time to go is a thursday or friday as that gives it time to settle. By Sunday afternoon the shear amount of divers murking it up made it pretty tough to see much. Overall, I'd say it's worth doing it at least once.