Your link stalls on me so I did a Google search and found
a DiveBuddy.com page on it. From that page:
"The water is 60 degrees, 130’ deep and crystal clear. The silo is 60’ in diameter and everything from the dressing areas to the electric gear winch, lighting systems and the actual dive area is 50-70’ underground. Mark and Linda Hannifin, owners of Family Scuba Center feel that the main draw for divers is the exclusivity and uniqueness of the site. (After all, how many people have ever even seen a missile silo, much less taken a guided tour and gotten to scuba dive in one?) It’s a BTDT (been there, done that) dive that makes for an interesting logbook entry and a definite conversation starter..... (you dove where??).
There is very little available light underwater, so be sure and bring your own dive light, backup dive light and marker light.
With constant 68 degree air temperature and consistent lighting at all times, and without overhead obstructions, the diving is safe and comfortable for certified divers. For divers to have the most fun, however, we recommend advanced certification and cold water experience as well as familiarity with altitude diving procedures and good buoyancy control. Since divers must climb down stairs 30’ in full gear to get to the water and 30’ back up to get out, you need to be in good health and physical condition to enjoy this dive.
Dive Valhalla is not open to the general public, but dives are easily arranged for dive clubs and dive shops by reservation. The group must consist of an instructor or insured divemaster who will be responsible for coordinating the diving activities and maintaining safety divers ready for any problems that might occur."
Leisure Pro has
a page on it, too.
My impressions from skimming some reading material on it:
1.) It's really deep (by OW newbie standards) and cold, so divers will be wearing thick wetsuits (or dry suits) and probably a hood and gloves. They'll be weighted to compensate for all that neoprene, which will compress at depth, making them 'heavier' requiring more air in the BCD. This may be new for someone with only warm water experience.
2.) That said, it's not real wide, so horizontally it's a more 'confined water' dive with good viz.
3.) But I imagine it's somewhat dark once in the water? Plus deep and cold, without a comforting wide-open sky. Might not be good for the claustrophobic.
4.) The Dive Buddy page reads like they expect the group to provide an instructor or
insured dive master
responsible for coordinating the dive activities
and maintaining safety divers for any problems that might occur.
That stuff I bolded & italicized is no joke. Sounds like they want you to take on the liability risk as official babysitter. Are you ready to cover that bet?
I'm a fan of educate people in advance what they're getting into, then 'dive at your own risk.' That's not how this reads. You're talking a deep, dark & cold shaft where they'll need to maintain buoyancy with a lot of neoprene on and handling dive lights, too.
I wouldn't bring basic OW newbies to this.
Richard.
