Photography Showcase 3 per week limit

[Al S]

'On the fly' image with just head torch illumination, entrance shaft, Christmas pot. Any hope of back light was rigging like a dervish further down the pitch.

 

[Al S]

Posed shot with flashes where Christmas meets Grange, Mike's body language summing up what he thinks of photo trips!

 

[Al S]

It's the holidays so another trip out today to see @Badlad and friends new discovery in Gavel. On the big scale there are some amazing straws but there are also some lovely helictites and crystal pools too.

 

[The Old Ruminator]

The Winch Man.

 

[The Old Ruminator]

The Tub Man.

 

[The Old Ruminator]

The Creative Spoil Stacker.

 

[The Old Ruminator]

A sneeky image of old Mr O'Doc struggling with the boulder net at the winch station.

 

[The Old Ruminator]

Meanwhile " Himself " ponders the use of more scaffolding under the huge block hanging out of the roof.

 

[The Old Ruminator]

Shatter. Macro from earlier this year.

 

[The Old Ruminator]

Where are all the cave photographers ?

Another from the earlier trip. Shatter Cave. Orange stal.

 

[Maisie Syntax]

Where are all the cave photographers ?

OK, here's a recent one - again, this is one of the many 'pretties', this time on the smaller end of the scale - from the new extensions in upstream Glasfurds. OM system TG7 & headtorch. Shame about the noise, but you get the idea.

 

[Ian P]

A “pre committee meeting “ trip down High Hull Pot.
“Skippy” of this Parish providing modelling duties.

 

[The Old Ruminator]

I thought that I would get in with the photographic elite. Tried that there AI editing but I think I went a bit too far.

 

[The Old Ruminator]

Back to sensible. Cryogenic displacement in Shatter Cave from 45,000 years ago. The stal has been snapped off revealing growth rings. That bit is stalagmited to the post glacial base flow. The stump has postglacial covering.

 

[The Old Ruminator]

This was a very quick waft around with the long pole. Camera near the roof in Tor Chamber, Shatter Cave so a view you won't have seen before. Learned a few things from the quick exercise. Here are the stats.
TG 6 Auto. Flash Off.
f2, 1/25 sec , 800 ISO.
Only the one hand held torch at ground level. Better placement of several torches would make a better image. That might have given a better Auto of f2.
I added a short pointer to the camera deck so I could look up and see what it was pointing at.
The pole is awkward so I have bought a fisherman's belt with pole support from Amazon for under £10.
Very minimal editing just a bit of centralising by cropping.
JPEG 8.85 MB. Proof of concept really.

 

[pwhole]

Anyone have an idea what's going on here? I assume it's fluorite given where it was found (Castleton), but I haven't seen this form before, and it appears to be a re-assemblage (or replacement?) of earlier crystals - possibly not fluorite originally. There's a few tiny crystals of opaque white calcite in there, but not much else. The mineral is very fragile, and easily broken in the hands, unlike a cubic exposure nearby that can resist a lump hammer.





A headtorch/smartphone somewhat exaggerates the colouration, but this is it in-situ. It just comes out of one wall and then disappears again - its only occurrence here.

 

[shotlighter]

Some sort of bladed barite/fluorite perhaps?
Maybe you have discovered Wolstenite!
Where's Brains when you need him.

 

[Mr Mike]

Some sort of epimorph?

 

[pwhole]

Some sort of bladed barite/fluorite perhaps?
Maybe you have discovered Wolstenite!
Where's Brains when you need him.

I like the sound of that

 

[Brains]

Triangles - National Speleological Society https://share.google/2MUYoc0m47Gq2OCs0

It would seem to be a rare habit of calcite. I have seen better images on t'web but of course can't find them now! Apparently it forms underwater, or at the surface. This may explain its friable nature?
Of course I am not guaranteeing anything and would like to know other ideas