Could you breathe as you got close?

Is it 1 2 3 4 ? If not, why not?

Usually 2-3hrs because of the energy-sap.

There's masses of them on Mendip, yes, currently.

Don't forget the fundamental importance of editing.

Ed Waters, perhaps. MCG. He does photography over and beyond point-and-press. Could be.

Which is another way of saying there will be zero effect on the ongoing current/future recreational caving.

About time too.

Why debate this? Anything that old will be instantly condemned, removed and binned.

Contemplating the realities of encountering one in close confines should be enough to ensure you'd ditch the trip. I wouldn't care to get anywhere near one, personally. Takes all sorts though.

Training in how to use your kit is what creates the safety.

Personally I find the Dewalt drill batteries are an absolute sod, bordering on impossible, to swap out while caving whereas Bosch are lemon squeezy peasy.

Obviously other people far cleverer than I (not particularly difficult, tbh) have worked out how to ensure W3W doesn't get reduced to ineffectiveness by people being unable to spell, or distinguish spoken language, but I've often wondered how W3W deals with anomalies like air, ere, ayre, or...

Thank you for my autobiography.

Organic chemistry* (humic and fulvic acids) can give rise to blood-and-guts colouration of speleothems, many examples of which abound on Mendip. *IIRC.