P3

[TracyN]

Tracy, as I mentioned in a previous post in this thread neither the NSS-CDS nor the NACD have any limitations on diving syphons at any level. A lot of people imagine they do, or have the impression they do, but they don't, at all.

You specifically remember from your NAUI cave 1 training that you were not allowed to dive syphons. I didn't do NAUI cave. I bet it was a good class as I have enjoyed several other NAUI classes. Could you find a reference in your course materials for the restriction on diving syphons. I am seriously curious and all to often it seems what people recall about the limitations is incorrect.

Did I mention downsream cow is a syphon? (sorry lol)

Hey. My instructor just taught out of the NACD book however I do remember seeing a slide during the lecture about limitations that siphon diving was not allowed. Unfortunately I don't have access to NAUI materials for reference. I looked throughout the NACD book and the only thing I could find about siphons is that they can require more conservative gas management.

You are right though downstream Cow is a siphon so it wouldn't make sense to allow cavern and intro divers to dive there but then say that they can't dive siphons.

[hunabku]

I draw the line somewhere between P3 and this...

[tj]

I was in there friday. Conditions just fine. Water level up so we got in at p2. Sidemounted over to upper p3 (cleaning away flood debris as we went) , then down into p3 main. Jumped right at 400' and past a spot that the line was hopelessly lost into sand. Someone prior had graciously left a permanent fix/jump over that section. Nicest dive that week. Lots of cave critters and catfish.

[Paulmal]

I draw the line somewhere between P3 and this...

Looks perfectly safe to me, I was doing that as an OW student. Lol

[derek]

Do you take your stages past the sand slide? I seem to remember that is where I always dropped mine. Maybe right past the slide.

The stage was a travel/deco bottle to cut down on deco after dropping to lower henley. Made the drop at the top of henley.

[stairman]

Ive never been to Henleys but thought you could swim over it without dropping down to trimix depths.

[FW]

Ive never been to Henleys but thought you could swim over it without dropping down to trimix depths.

Yes, you can.

[curtschu]

Ive never been to Henleys but thought you could swim over it without dropping down to trimix depths.

When you say swim over it?? Once you go through the bedding plane and enter the big room I think you should have He. I've gone to the bottom a couple of times the first one on air. I can honestly say that was crazy but hey it was the 90s all the kids were doing it. First time on trimix was a totally different experience.

[TracyN]

I was in there friday. Conditions just fine. Water level up so we got in at p2. Sidemounted over to upper p3 (cleaning away flood debris as we went) , then down into p3 main. Jumped right at 400' and past a spot that the line was hopelessly lost into sand. Someone prior had graciously left a permanent fix/jump over that section. Nicest dive that week. Lots of cave critters and catfish.

Was it orange line? If so that is the line that Paul put in. Initially I thought he was doing it because the line was broken.

[DA Aquamaster]

When you say swim over it?? Once you go through the bedding plane and enter the big room I think you should have He. I've gone to the bottom a couple of times the first one on air. I can honestly say that was crazy but hey it was the 90s all the kids were doing it. First time on trimix was a totally different experience.

The bedding plane is at 135' or so and that's below the 130' END that even the most liberal agencies recommend for cave diving. Oddly enough, we went there once in an AN/DP class - basically through the bedding plane and turning the dive at 145' at the top of Hendlys. It was a very simple dive plan - drop down, go through the sand slide/bedding plane, follow the line to a depth of 145' and turn the dive.

We have been back to the lower part of the room and poked into the passage below Hendlys, but we've done that on trimix. I would not recommend anyone go to top of Hendlys, let alone the bottom, without trimix. Besides, on trimix you really see the whole expanse of the room there, where you are otherwise so perceptually narrowed that all you really see is the line and what's immediately around it. I'd argue if any one has not gone there on trimix, they have never really been there.