Cave and cave diving related videos

[Chris Grosart]

Just the heads up on the trailer for a film I'm creating, to be shown at the Kendal Mountain Festival this November.

I'm also giving a talk on this cave diving project. Between the 3 of us (Myself, Richard Walker and Ash Hiscock) we've extended the second sump in this cave by 400 metres with an average depth of about 45m, 50m at the deepest point in 7 degrees of water.
The project is continuing and we've been filming the progress.

To see the final film, head to the Kendal Mountain Festival website and book your tickets. There will also be a talk from Jason Mallinson on the Thailand rescue, so I'm told.

Christine

[huwporter]

This thread has been too quiet.

Another year, another pilgrimage to Mexico, another video:

https://vimeo.com/373058729

Always experimenting with different techniques for getting light in to dark places, time always goes so fast...

[BenL]

Cool. What are the opaque pools of green, around 1:20?

[huwporter]

Cool. What are the opaque pools of green, around 1:20?

Thanks. It's hydrogen sulphide (or to be completely precise hydrosulphuric acid, i.e. hydrogen sulphide gas dissolved in water). There is a halocline there - this cenote is close to the coast so the salt water intrusion comes quite shallow, about 5 metres depth here. The H2S is slightly denser than the fresh water, but very slightly lighter than the saltwater and gets trapped at the boundary, so you'll only see this effect where there is a halocline. You see the same thing on a larger scale at e.g. Cenote Angelita https://vimeo.com/77922751.

[N Bailey]

Would be interesting to know if anyone has pushed through the layer.
H2S is dangerous stuff and rots out copper destroys your sense of smell and kills you pretty quickly.

[Neilwood]

Spellbinding video.

I just watch video like that and see so many ways I could die...

Don't really think caves are my thing.

[t0by]

The classic tourist dive involves swimming beneath the hs2 layer. It's spooky and smells pretty bad. But a very cool place to see

[huwporter]

Would be interesting to know if anyone has pushed through the layer.
H2S is dangerous stuff and rots out copper destroys your sense of smell and kills you pretty quickly.

Did you watch the second link I posted? https://vimeo.com/77922751 It is strong enough that you can smell the bad egg odour permeating through your skin even when wearing a mask, but not fatal when you have a reg to breathe off, at least not for short exposures. It does make some people nauseous and turn your brass black though.

[ScottyG]

Chapter 3 of the ongoing exploration of Africa's longest flooded cave, Anjanamba, in Madagascar.

https://www.youtube.com/watch?v=_O5gLZzPZbU

[uncertainplume]

Chapter 3 of the ongoing exploration of Africa's longest flooded cave, Anjanamba, in Madagascar.

https://www.youtube.com/watch?v=_O5gLZzPZbU

Awesome!

[huwporter]

My home state borders are still (pandemic) closed, but I'm lucky enough to be living in a state with diveable caves. Even if it requires a 12+ hours drive to get to the entrance, then more or less a day of back-breaking effort to get the dive gear to the actual water level before you can start diving, another full day of even more backbreaking effort to get the gear out again and another 12+ hour drive home afterwards.

Murra El Elevyn Cave: https://vimeo.com/640806838

(I promise I'll never complain about having to walk a couple of hundred metres to the cave in Mexico ever again...)

[cathal]

Brilliant video, thanks for posting, thats one serious dive trip!

[graham_hk]

Great Vid Huw. Almost makes me wanna go cave diving ... almost

[M-J-J]

Great Vid Huw. Almost makes me wanna go cave diving ... almost

Great video!

[Eddie Clamp]

Germie has done some good stuff on European cave diving which can be viewed here: https://www.thediveforum.com/showthr...-Mediterranean