This the "state of the art" in through sump cave communication:

It was originally climbed by the original GSS diggers, Simon Witt, Mike Green & the late Steve Tomalin. I went up there in the late '80s.

Steve says it is Julian Todd.

We're off to Tenerife on Saturday, staying in Puerto de la Cruz - we've been before and last time visited the main show cave (Cueva del Viento) - got talking to the operators who said that if I'd got in touch ahead of our visit then they could have arranged a trip to the "wild" parts of the...

HE2023 campsite Saturday 00:30 - I went to bed at 04:30.

I haven't felt so hung over since August 22nd 2001. Didn't go to bed until 04:30.

I'm giving a talk on 14th October at the Earth Science Centre: GEO LECTURE DAY Also Andy Edwards is giving a talk on Brownes Hole at the same venue on 22nd September: tickets

I'm in the frame for this having been talked into it under the influence of ale, Les Williams & Mark Helmore. I've reached out to various peeps via various channels and met with a typically lack luster response. This is a gentle reminder that unless folks want to listen to me talking about...

My copy arrived yesterday and I started reading it immediately. Good effort!

I have the app on my phone - it is OK over short distances. I corresponded with the manufacturers several years ago and they confirmed it had been trialed for cave surveying with poor results.

Andrew Atkinson & Ali Moody opened up the connection from 20 to Beyond The Thunderdome in early 2016. I came along later and made it bigger with the help of Max Fisher & Pete Hall. We took a boat to Edmunds Chamber (or Rift) as it is sometimes called for some exclusive canoeing. The contact...

And in the '80s - I was a member.

Correct - I frequently use sparkling water in STEM demos and the figure I quote is that 1 litre of water can hold 6 litres of gaseous CO2 (more under pressure). I add universal indicator to demonstrate that it is a weak acid and then degas it under vacuum and watch the pH rise. Here's my go to...

It's all online - I'm using the £D SURVEX model which you can get from my website. Anyone can have it. The Wookey stuff will shortly include our laser scanning data as we can now integrate the point cloud from this into SURVEX.